Future studies with high-precision on fundamental interactions developed on lepton colliders require high-intensity and low-emittance positron sources. Such sources are needed for e+e- and also μ+μ- (generated with positrons) facilities. The availability of powerful positron sources is, therefore, very important. In this context, positron sources providing higher yields, better emittance and...
We go beyond the state-of-the-art by combining first principle lattice results and effective field theory approach as Polyakov Loop model to explore the non-perturbative dark deconfinement-confinement phase transition and the generation of gravitational-waves in a pure gluon dark Yang-Mills theory. We further include fermions with different representations in the dark sector. Employing the...
With proton-proton collisions about to restart at the Large Hadron Collider (LHC) the ATLAS detector will double the integrated luminosity the LHC accumulated in the ten previous years of operation. After this data-taking period the LHC will undergo an ambitious upgrade program to be able to deliver an instantaneous luminosity of $7.5\times 10^{34}$ cm$^{-2}$ s$^{-1}$ allowing to collect more...
The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic $ep$ scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of $\alpha_s(M_Z^2)$ and the PDFs, was performed with the...
ALICE is the experiment at the LHC specifically designed to study the properties of the quark-gluon plasma (QGP), a deconfined state of matter created in ultrarelativistic heavy-ion collisions. In this context, light-flavour particle production measurements play a key role, as they can probe statistical hadronization and partonic collectivity. Recent measurements in small collision systems (pp...
Very detailed measurements of Higgs boson properties and its interactions can be performed with the full Run 2 pp collision dataset collected at 13 TeV by using its decays into bosons, shining light over the electroweak symmetry breaking mechanism. This talk presents the latest measurements of the Higgs boson coupling properties by the ATLAS experiment in various bosonic decay channels, e....
Physics in (canonical) quantum gravity needs to be manifestly diffeomorphism-invariant. Consequently, physical observables need to be formulated in terms of manifestly diffeomorphism-invariant operators, which are necessarily composite. This makes an evaluation in general involved, even if the concrete implementation of quantum gravity should be treatable (semi-)perturbatively in general.
A...
One of the main goals of the STAR experiment is to map the QCD phase diagram. The flow harmonics of azimuthal anisotropy ($v_{2}$ and $v_{3}$) of particles are sensitive to the initial dynamics of the medium. The first phase of RHIC Beam Energy Scan Phase-I (BES-I) program demands a precision measurement of $v_{2}$ and $v_{3}$ specifically for $\phi$ mesons and multi-strange hadrons in the low...
Fermilab is considering several concepts for a future 2.4~MW upgrade for DUNE/LBNF, featuring linac extensions of the PIP-II linac and the construction of a new rapid-cycling-synchrotron and/or accumulation rings. This talk will summarize the relationship between these scenarios, emphasizing the commonalities and tracing the differences to their original design questions. In addition to a...
According to the current experimental data, the SM Higgs vacuum appears to be metastable due to the development of a second, lower ground state in the Higgs potential. Consequently, vacuum decay would induce the nucleation of true vacuum bubbles with catastrophic consequences for our false vacuum Universe. Since such an event would render our Universe incompatible with measurements, we are...
In recent times, several hints of lepton flavour universality violation have been observed in semileptonic B decays, which point towards the existence of New Physics beyond the Standard Model. In this context, we consider a new variant of $U(1)_{L_{\mu}-L_{\tau}}$ gauge extension of Standard Model, containing three additional neutral fermions $N_{e}, N_{\mu}, N_{\tau}$, along with a...
Thanks to the statistics of pp collision collected by the ATLAS experiment a 13 TeV a the LHC Run 2, detailed measurements of Higgs boson properties and its interactions can be performed using its decays into fermions, shining light over the properties of the Yukawa interactions. This talk presents the latest measurements of the Higgs boson properties by the ATLAS experiment in various...
We discuss recent developments related to the the latest release of the NNPDF family of global analyses of parton distribution functions: NNPDF4.0. This PDF set expands the NNPDF3.1 determination with 44 new datasets, mostly from the LHC. We derive a novel methodology through hyperparameter optimisation, leading to an efficient fitting algorithm built upon stochastic gradient descent....
Neutrino oscillation physics has now entered the precision era. In parallel with needing larger detectors to collect more data with, future experiments further require a significant reduction of systematic uncertainties with respect to what is currently available. In the neutrino oscillation measurements from the T2K experiment the systematic uncertainties related to neutrino interaction cross...
The stability of particles in the cosmic soup is an important property as it governs their evolution in the cosmos, both on the perturbation and on the background level. In this work, we update the constraints on the decay rate of decaying cold dark matter (DCDM), particularly in the case when decay products are dark and massless or well within the relativistic limit. We further assume, as a...
The latest studies of beauty meson decays to open charm final states from LHCb are presented. Several first observations and branching fraction measurements using Run 1 and Run 2 data samples are shown. These decay modes will provide important spectroscopy information and inputs to other analyses.
The increase of the particle flux at the HL-LHC with instantaneous luminosities up to L ≃ 7.5 × 10^34 cm^−2s^−1 will have a severe impact on the ATLAS detector performance. The forward region where the liquid Argon calorimeter has coarser granularity and the inner tracker has poorer momentum resolution will be particularly affected. A High Granularity Timing Detector (HGTD) will be installed...
The Muon g-2 Experiment at Fermilab has recently measured the muon magnetic anomaly with 460 parts per billion precision. This result is consistent with the measurement from the previous BNL experiment, and the combined Fermilab-BNL value deviates from the most recent Standard Model calculation provided by the Muon g-2 Theory Initiative at the level of 4.2 standard deviations. The muon anomaly...
I will briefly discuss the signatures and discovery prospects of several new physics models containing dark matter candidates at future lepton colliders. In particular, I will discuss the IDM as well as THDMa. Based on https://arxiv.org/abs/2203.07913
The all-order structure of scattering amplitudes is greatly simplified by the use of (generalized) Wilson line operators, describing (subleading) soft emissions from straight lines extending to infinity. In this talk I will review how these techniques (originally developed for QCD phenomenology) can be naturally applied to gravitational scattering. At the quantum level, we find a convenient...
We present fits to determine parton distribution functions (PDFs) using a diverse set of measurements from the ATLAS experiment at the LHC, including inclusive W and Z boson production, ttbar production, W+jets and Z+jets production, inclusive jet production and direct photon production. These ATLAS measurements are used in combination with deep-inelastic scattering data from HERA. Particular...
This talk will cover measurements of Higgs boson differential cross section measurements with fermionic decay channels and in ttH production, including fiducial differential cross-sections and STXS results.
NOvA is a long-baseline neutrino oscillation experiment with a beam and near detector at Fermilab and a far detector 810 km away in northern Minnesota. It features two functionally identical scintillator detectors. By measuring muon neutrino disappearance and electron neutrino appearance as a function of energy in both neutrinos and antineutrinos, NOvA can measure the parameters of the PMNS...
In this talk, I will present a short overview of the connection between particle physics and phase transitions in the early and very early universe. I will then focus on phase transitions during inflation and present recent results on how to use the stochastic spectral expansion to perform phenomenology calculations. I will also talk about the interplay between the electroweak phase...
The tree-level determination of the CKM angle gamma is a standard candle measurement of CP violation in the Standard Model. The latest LHCb results from measurements of CP violation using beauty to open charm decays are presented. These include measurements using the full LHCb Run 1+2 data sample and the latest LHCb gamma & charm mixing combination.
Strange and multi-strange hadrons have a small hadronic cross-section compared to light hadrons, making them an excellent probe for understanding the initial stages of relativistic heavy-ion collisions and dynamics of QCD matter. Isobar collisions, $^{96}_{44}$Ru+$^{96}_{44}$Ru and $^{96}_{40}$Zr+$^{96}_{40}$Zr, at $\sqrt{s_{\mathrm {NN}}}$ = 200 GeV have been performed at RHIC. These...
The Upgrade II of the LHCb experiment is proposed for the long shutdown 4 of the LHC. The upgraded detector will operate at a maximum luminosity of $1.5x10^{34}$cm$^{-2}$s$^{-1}$, with the aim of integrating ~300 fb$^{-1}$ through the lifetime of the high-luminosity LHC (HL-LHC). The collected data will allow to fully exploit the flavour-physics opportunities of the HL-LHC, probing a wide...
Bubble nucleation is a key ingredient in a cosmological first order phase transition. The non-equilibrium bubble dynamics and the properties of the transition are controlled by the density perturbations in the hot plasma. We present, for the first time, the full solution of the linearized Boltzmann equation. Our approach, differently from the traditional one based on the fluid approximation,...
The NOvA experiment is a long-baseline accelerator neutrino oscillation experiment. NOvA uses the upgraded NuMI beam from Fermilab and measures electron neutrino appearance and muon neutrino disappearance at its Far Detector in Ash River, Minnesota. NOvA is a pioneer in the neutrino community to use classification and regression convolutional neural networks with direct pixel map inputs for...
This talk will cover measurements of Higgs boson differential cross section measurements with boson decay channels, including fiducial differential cross-sections and STXS results.
The Inert Doublet Model (IDM) is a simple extension of the Standard Model, introducing an additional Higgs doublet that brings in four new scalar particles. The lightest of the IDM scalars is stable and is a good candidate for a dark matter particle. The potential of discovering the IDM scalars in the experiment at the Compact Linear Collider (CLIC), an e$^+$e$^-$ collider proposed as the next...
The radion equilibrium in the Randall-Sundrum model is guaranteed by the backreaction of a bulk scalar field. We studied the radion dynamics in an extended scenario, where an intermediate brane exists in-between the UV and IR branes. We conducted an analysis in terms of the Einstein’s equations and effective Lagrangian after applying the Goldberger-Wise mechanism. Our result elucidates that in...
Recently the Muon g-2 collaboration published the most precise measurement of the anomalous magnetic moment of the muon, $a_\mu$, with a 460 ppb uncertainty based on the Run 1 data. The measurement principle is based on a clock comparison between the anomalous spin precession frequency of spin-polarized muons and a high-precision measurement of the magnetic field environment using nuclear...
Relativistic protons and electrons in the extremely powerful jets of blazars may boost via elastic collisions the dark matter particles in the surroundings of the source to high energies. The blazar-boosted dark matter flux at Earth may be sizeable, larger than the flux associated with the analogous process of DM boosted by galactic cosmic rays, and relevant to access direct detection for dark...
One of the key challenges of hadron physics today is understanding the origin of strangeness enhancement in high-energy hadronic collisions, i.e. the increase of (multi)strange hadron yields relative to non-strange hadron yields with increasing charged-particle multiplicity. In particular, what remains unclear is the relative contribution to this phenomenon from hard and soft QCD processes and...
The investigation of $B$-meson decays to charmed and charmless hadronic final states is a keystone of the Belle II physics program. It allows for theoretically reliable and experimentally precise constraints on the CKM Unitarity Triangle fit, and is sensitive to effects from non-SM physics. Results on branching ratios, direct CP-violating asymmetries, and polarization of various charmless...
The Compact Muon Solenoid (CMS) detector at the CERN Large Hadron Collider (LHC) is undergoing an extensive upgrade program to prepare for the challenging conditions of the High-Luminosity LHC (HL-LHC). A new timing detector in CMS will measure minimum ionizing particles (MIPs) with a time resolution of ~40-50 ps per hit and coverage up to |η|=3. The precision time information from this MIP...
The QCD strong coupling (alpha_s) and the parton distribution functions (PDFs) of the proton are fundamental ingredients for phenomenology at high-energy facilities such as the Large Hadron Collider (LHC).
It is therefore of crucial importance to estimate any theoretical uncertainties associated to them.
Both alpha_s and PDFs obey their own renormalisation-group equations (RGEs) whose...
T2K is a long baseline neutrino experiment producing a beam of muon neutrinos and antineutrinos at the Japan Particle Accelerator Research Centre (JPARC) and measuring their oscillation by comparing the measured neutrino rate and spectrum at a near detector complex, located at JPARC, and at the water-Cherenkov detector Super Kamiokande, located 295 Km away.
Such intense neutrino beam and the...
Many scenarios of physics beyond the Standard Model predict dark sectors containing new particles interacting only feebly with ordinary matter. Collider searches for these scenarios have largely focused on identifying signatures of new mediators, leaving much of the dark sector structure unexplored. We investigate the existence of a light dark-matter bound state, the darkonium,...
The reduction of random motion in particle beams, known as beam cooling, has dramatically extended the science reach of many accelerator facilities, with applications ranging from high-energy colliders to the accumulation of antimatter for tests of CPT symmetry and gravity. One of the primary research frontiers in beam cooling is the realization of advanced cooling concepts that have system...
The LHCb experiment covers the forward region of proton-proton collisions, and it can improve the current electroweak landscape by studying W and Z bosons in this phase space complementary to ATLAS and CMS. Thanks to the excellent detector performance, fundamental parameters of the Standard Model can be precisely measured by studying the properties of the electroweak bosons. In this talk an...
The ATLAS experiment has performed measurements of B-meson rare decays proceeding via suppressed electroweak flavour changing neutral currents, and of mixing and CP violation in the neutral $B_s$ meson system. This talk will focus on the latest results from the ATLAS collaboration, such as rare processes $B^0_s \to \mu \mu$ and $B^0_d \to \mu \mu$, and $CP$ violation in $B^0_s \to J/\psi...
The LHCb spectrometer has the unique capability to function as a fixed-target experiment by injecting gas into the LHC beampipe while proton or ion beams are circulating. The resulting beam+gas collisions cover an unexplored energy range that is above previous fixed-target experiments, but below the top RHIC energy for AA collisions. Here we present new results on antiproton and charm...
We consider the well-motivated scenario of dark matter annihilation with a velocity-dependent cross section. At higher speeds, dark matter annihilation may be either enhanced or suppressed, which affects the relative importance of targets like galactic subhalos, the Galactic Center, or extragalactic halos. We consider a variety of new strategies for determining the associated J-factors, and...
The MIP Timing Detector (MTD) is a new sub-detector planned for the Compact Muon Solenoid (CMS) experiment at CERN, aimed at maintaining the excellent particle identification and reconstruction efficiency of the CMS detector during the High Luminosity LHC (HL-LHC) era. The MTD will provide new and unique capabilities to CMS by measuring the time-of-arrival of minimum ionizing particles with a...
The discovery of the Higgs boson ten years ago and successful measurement of the Higgs boson couplings to third generation fermions by ATLAS and CMS mark great milestones for HEP. The much weaker coupling to the second generation quarks predicted by the SM makes the measurement of the Higgs-charm coupling much more challenging. With the full run-2 data collected by the CMS experiment, a lot of...
We present EKO and yadism, a new DGLAP evolution and DIS code respectively, able to provide PDF independent operators, for fast predictions evaluation.
They both support a wide range of physics and computational features, with a Python API to access the individual ingredients (e.g. strong coupling evolution), and file based output for a language agnostic consumption of the results. They are...
We present a simple extension of the Standard Model with three right-handed neutrinos with an additional U(1$)_\text{F}$ abelian flavor symmetry, with a non standard leptonic charge $L_e-L_\mu-L_\tau$ for lepton doublets and arbitrary right-handed charges. We present a see-saw realization of such a scenario. The baryon asymmetry of the Universe is generated via thermal leptogenesis through...
The main goal of the Mu2e experiment at Fermilab is to search for indications of charged lepton flavor violation [1]. To achieve this goal, experimenters will be searching for the coherent neutrinoless conversion of a negative muon into an electron in the field of a nucleus by measuring 105-MeV electrons emitted in conversions of negative muons into electrons in the nuclear field of an Al...
A resonant structure has been observed at ATOMKI in the invariant mass of electron-positron pairs, produced after excitation of nuclei such as $^8$Be and $^4$He by means of proton beams. Such a resonant structure can be interpreted as the production of an hypothetical particle (X17) whose mass is around 17 MeV.
The MEG-II experiment at the Paul Scherrer Institut whose primary physics goal is...
The Precision Proton Spectrometer (PPS) is a subdetector of CMS introduced for the LHC Run 2, which provides a powerful tool for advancing BSM searches. The talk will discuss the key features of proton reconstruction (PPS alignment and optics calibrations), validation chain with physics data (using exclusive dilepton events), and finally the new results on exclusive diphoton, ttbar, Z+X, and...
The presence of charmonium in the final states of B decays is a very clean experimental signature that allow the efficient collection of large samples of these decays. In addition, decays of beauty hadrons to final states with charmonium resonances proceed mainly through $b\to ccq$ tree-level transitions. The negligible penguin pollutions make these decays excellent probes of Standard Model...
The large gap between a galactic dark matter subhalo's velocity and its own gravitational binding velocity creates the situation that dark matter soft-scattering on baryons to evaporate the subhalo, if kinetic energy transfer is efficient by low momentum exchange. Small subhalos can evaporate before dark matter thermalize with baryons due to the low binding velocity. In case dark matter...
The MoEDAL experiment deployed at IP8 on the LHC ring was the first dedicated search experiment to take data at the LHC in 2010. It was designed to search for Highly Ionizing Particle (HIP) avatars of new physics such as magnetic monopoles, dyons, Q-balls, multiply charged particles, and massive slowly moving charged particles in p-p and heavy-ion collisions. We will report on our most...
The intriguing phenomena emerging in the high-density QCD matter are being widely studied in the heavy ion program at the LHC and will be understood more deeply during the high luminosity LHC (HL-LHC) era. The CMS experiment is under the Phase II upgrade towards the HL-LHC era. A new timing detector is proposed with timing resolution for minimum ionization particles (MIP) to be 30ps. The MIP...
Beam extraction and collimation in particle accelerators using bent crystals as compact elements capable of efficiently steering particle beams has been investigated at several high-energy hadron accelerators, such as SPS and LHC (CERN, Geneva), Tevatron (Batavia, USA), U70 (Protvino, Russia). Due to technological limitations and a not sufficiently deep understanding of the physics at the base...
MINER$\nu$A is a neutrino-nucleus interaction experiment in the Neutrino Main Injector (NuMI) beam at Fermilab. With the $\langle E_{\nu}\rangle = 6\,\, \text{GeV}$ Medium Energy run complete and $12 \times 10^{20}$ protons on target delivered in neutrino and antineutrino mode, MINER$\nu$A combines a high statistics reach and the ability to make precise cross-section measurements in more than...
The LHeC and the FCC-he are the cleanest, high resolution microscopes that the world can build in the nearer future. Through a combination of neutral and charged currents and heavy quark tagging, they will unfold the parton structure of the proton with full flavour decomposition and unprecedented precision. In this talk we will present the most recent studies on the determination of proton...
With the full Run2 pp collision dataset collected at 13 TeV, the interactions of Higgs boson to third generation fermion have been established. For the understanding of Yukawa interaction mechanism, it is crucial to establish the interactions to second generation fermions. This talk presents the latest searches for the Higgs boson decays into second generation fermions, as well as for other...
The nature of Dark Matter (DM) is one of the greatest puzzles of modern particle physics and cosmology. Dark Matter characterisation requires systematic and consistent approach for DM theory space. We propose a first complete classification of minimal consistent Dark Matter models, which provides the missing link between experiments and top-down models. Consistency is achieved by imposing...
The CMS Collaboration is preparing to replace its endcap calorimeters for the HL-LHC era with a high-granularity calorimeter (HGCAL). The HGCAL will have fine segmentation in both the transverse and longitudinal directions, and will be the first such calorimeter specifically optimized for particle-flow reconstruction to operate at a colliding-beam experiment. The proposed design uses silicon...
In Lattice gauge theories , to calculate the PDFs from first principles
it is convenient to consider the Ioffe-time distribution defined through gauge-invariant bi-local operators with spacelike separation. Lattice calculations provide values for a limited range of the distance separating the bi-local operators. In order to perform the Fourier transform and obtain the pseudo- and the...
Electric charge quantization is a long-standing question in particle physics. While fractionally charged particles (millicharged particles hereafter) have typically been thought to preclude the possibility of Grand Unified Theories (GUTs), well-motivated dark-sector models have been proposed to predict the existence of millicharged particles while preserving the possibility for unification....
We discuss measurements of the CP properties of the Higgs boson with the CMS detector, both exploiting Higgs boson production and its decay, as well as searches for non-standard-model CP contributions, and anomalous couplings in general.
The Compact Linear Collider (CLIC) collaboration has presented a project implementation plan for construction of a 380 GeV e+e- linear collider 'Higgs and top factory' for the era beyond HL-LHC, that is also upgradable in stages to 3 TeV. The CLIC concept is based on high-gradient normal-conducting accelerating structures operating at X-band (12 GHz) frequency. Towards the next European...
The LiteBIRD satellite (Lite satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection) will perform the final measurement of the Cosmic Microwave Background polarization anisotropies on large and intermediate angular scales. Its sensitivity and the wide frequency coverage in 15 bands will allow an unprecedented accuracy in the measurement and...
Studies of the CP properties of the Higgs boson in various production modes and decay channels are presented. Limits on the mixing of CP-even and CP-odd Higgs states are set by exploiting the properties of diverse final states.
The measurement of neutral mesons in pp collisions allows a test of perturbative QCD calculations and represents an important baseline for heavy-ion studies. Neutral mesons are reconstructed in ALICE with multiple methods in a very wide range of transverse momenta and thus impose restrictions on the parton distribution functions and fragmentation functions over a wide kinematic region....
We discuss the imprints of a cosmological redshift-dependent pseudoscalar field on the rotation of Cosmic Microwave Background (CMB) linear polarization generated by a coupling $ g_\phi \phi F^{\mu\nu} \tilde F_{\mu \nu}$.
We show how either phenomenological or theoretically motivated redshift dependence of the pseudoscalar field, such as those in models of Early Dark Energy, Quintessence...
The large integrated luminosity collected by the ATLAS detector at the highest proton-proton collision energy provided by LHC allows to probe the presence of new physics that could enhance the rate of rare processes in the SM. The LHC can therefore gain considerable sensitivity for Flavour Changing Neutral Current (FCNC) interactions of the top quark. In the SM, FCNC involving the top-quark...
Several new features have been recently observed in high-multiplicity small collision systems that are reminiscent of the observations attributed to the creation of a quark-gluon plasma, QGP, in Pb-Pb collisions. These include long-range angular correlations on the near and away side of two-particle correlations, non-vanishing second order Fourier coefficients in multiparticle cumulant...
The Heavy Photon Search (HPS) experiment was conceived to search for a light new vector boson A’ that is kinetically mixed with the photon and has a kinetic mixing parameter $ε^2 > 10^{-10}$. A vector boson with a mass in the 20-220 MeV/c$^2$ range could also mediate interactions between the Standard Model and light thermal dark matter. HPS searches for visible signatures of heavy photons in...
A new era of hadron collisions will start around 2028 with the High-Luminosity LHC, that will allow to collect ten times more data that what has been collected so far at the LHC. This is possible thanks to a higher instantaneous luminosity and higher number of collisions per bunch crossing.
To meet the new trigger and data acquisition requirements and withstand the high expected radiation...
In the Superconducting rf Test Facility (STF) at High Energy Accelerator Research Organization (KEK), the cool-down tests of STF-2 cryomodules and the beam operations have been held since 2019.
STF-2 cryomodules are the same type as those for the International Linear Collider (ILC). As a result of beam operation so far, the averaged acceleration gradient of 9 cavities reached 33 MV/m, which...
In this contribution, we present the latest measurements of $\mathrm{D}^0$, $\mathrm{D}^+$ and $\mathrm{D_s}^+$ mesons together with the final measurements of $\Lambda_\mathrm{c}^+$, $\Xi_\mathrm{c}^{0,+}$, $\Sigma_\mathrm{c}^{0,++}$, and the first measurement of $\Omega_\mathrm{c}^0$ baryons performed with the ALICE detector at midrapidity in pp collisions at $\sqrt{s}=5.02$ and $\sqrt{s}=13$...
Parity-violating extensions of Maxwell electromagnetism induce a rotation of the linear polarization plane of photons during propagation. This effect, known as cosmic birefringence, impacts on the Cosmic Microwave Background (CMB) observations producing a mixing of $E$ and $B$ polarization modes which is otherwise null in the standard scenario. Such an effect is naturally parametrized by a...
Today the investigation of dark matter nature, its origin, and the way it interacts with ordinary matter plays a crucial role in fundamental science. Several particle physics experiments at accelerators are searching for hidden particles signals to contribute setting more stringent limits on the characteristics of dark matter.
The Positron Annihilation into Dark Matter Experiment (PADME),...
KKMChh adapts the CEEX (Coherent Exclusive Exponentiation) of the Monte Carlo Program KKMC for Z boson production and decay to hadron scattering. Amplitude-level soft photon exponentiation of initial and final state radiation, together with initial-final interference, is matched to a perturbative calculation to second order next-to-leading logarithm, and electroweak corrections to the hard...
Due to large scale separations, matching is an essential and laborious computational step in the comparison of high-energy new physics models to experimental data.
Matchete is a Mathematica package that automates the one-loop matching from any generic ultraviolet (UV) model to a low-energy effective field theory (EFT) including, but not limited to, SMEFT. The program takes a UV Lagrangian as...
This talk presents the most recent measurements of Higgs boson mass and width by the ATLAS experiment exploiting the Higgs boson decays into two photons or four leptons, and using the full Run 2 dataset of pp collisions collected at 13 TeV at the LHC.
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a Gadolinium-loaded water Cherenkov detector located in the Booster Neutrino Beam at Fermilab. One of its primary physics goals is to measure the final state neutron multiplicity of neutrino-nucleus interactions. This measurement of the neutron yield as a function of the outgoing lepton kinematics will be useful to constrain...
Outstanding vertexing performance and low-background environment are key enablers of a systematic Belle II program targeted at measurements of charm hadron lifetimes Recent results from measurements of $D^0$ meson, $D^+$ meson and $\Lambda_c$ baryon lifetimes are presented. The results are the most precise to date.
The High Luminosity upgrade of the LHC (HL-LHC) at CERN will provide unprecedented instantaneous and integrated luminosities of around 5 x 10^34 cm-2 s-1 and 3000/fb, respectively. An average of 140 to 200 collisions per bunch-crossing (pileup) is expected. In the barrel region of the Compact Muon Solenoid (CMS) electromagnetic calorimeter (ECAL), the lead tungstate crystals and avalanche...
Based on the example of the currently widely studied t-channel simplified model with a colored mediator, I will demonstrate the importance of considering non-perturbative effects such as the Sommerfeld effect and bound state formation for accurately predicting the relic abundance and hence correctly inferring the viable model parameters. For instance, I will highlight that the parameter space...
The machine-detector interface (MDI) issues are one of the most complicated and challenging topics at the Circular Electron Positron Collider (CEPC). Comprehensive understandings of the MDI issues are decisive for achieving the optimal overall performance of the accelerator and detector. The CEPC machine will operate at different beam energies, from 45.5 GeV up to 120 GeV, with an instantons...
The main source of systematic uncertainty on neutrino cross section measurements at the GeV scale originates from the poor knowledge of the initial flux. The goal of cutting down this uncertainty to 1% can be achieved through the monitoring of charged leptons produced in association with neutrinos, by properly instrumenting the decay region of a conventional narrow-band neutrino beam. Large...
We report on the search visible decays of exotic mediators from data taken in "beam-dump" mode with the NA62 experiment.
The NA62 experiment can be run as a "beam-dump experiment" by removing the Kaon production target and moving the upstream collimators into a "closed" position.
In 2021, more than 10^17 protons on target have been collected in this way during a week-long data-taking...
With the data collected in Run-2, the Higgs boson can be studied in several production processes using a wide range of decay modes. Combining data in these different channels provides a broad picture of the Higgs boson coupling strengths to SM particles. This talk will cover the latest combination of Higgs boson production and decay modes at CMS to measure the Higgs boson couplings.
I would like to present an intriguing new perspective into such fundamental questions as 1) the origin of the gauge interactions in the Standard Model (SM), and 2) the origin of the quark, lepton and neutrino families' replication and their fundamental properties experimentally observed in Nature. These questions can be addressed by tying together in a common framework both flavour physics and...
I will discuss nonperturbative flavor correlations between pairs of leading and next-to-leading charged hadrons within jets at the Electron-Ion Collider (EIC). We introduce a charge correlation ratio observable $r_c$ that distinguishes same- and opposite-sign charged pairs. Using Monte Carlo simulations with different event generators, $r_c$ is examined as a function of various kinematic...
New ''dark'' fermionic fields charged under a confining dark group ($\text{SU}(N)$ or $\text{SO}(N)$) can come as embeddings in SU(5) multiplets to explain dark matter (DM). These fermions would form bound states due to the confining nature of the dark gauge group. Such dark baryons could prove to be a good neutral DM candidate stable due to a dark baryon number. DM relic abundance sets the...
The Future Circular electron-positron Collider, FCC-ee, is designed for unprecedented precision for particle physics experiments from the Z-pole to above the top pair threshold. This demands a precise knowledge of the center-of-mass energy (ECM) and collision boosts at all four interaction points and all operation energies. Determining the average beam energies is foreseen using resonant...
The weak mixing angle is a probe of the vector-axial coupling structure of electroweak interactions. It has been measured precisely at the Z-pole by experiments at the LEP and SLD colliders, but its energy dependence above $m_Z$ remains unconstrained.
In this contribution we propose to exploit measurements of Neutral-Current Drell-Yan production at the Large Hadron Collider at large...
The sPHENIX detector at the BNL Relativistic Heavy Ion Collider (RHIC) is currently under construction and on schedule for first data in early 2023. Built around the BaBar superconducting solenoid, the central detector consists of a silicon pixel vertexer, a silicon strip detector with single event timing resolution, a compact TPC, novel EM calorimetry, and two layers of hadronic calorimetry....
BESIII has collected 2.93 and 6.32 $fb^-1$ of $e^+e^-$ collision data samples at 3.773 and
4.178-4.226 GeV, respectively. We will report precision measurements of $f_{Ds}$, $|V_{cs}|$
and test of lepton flavor universality by studying the leptonic decays of $D_s -> l^+ \nu$
with $\tau^+ -> \rho^+ \nu, \pi^+ \nu$, and $e^+ \nu \nu$. We will also report the observation of
semileptonic decay...
The Tile Calorimeter (TileCal) is the hadronic calorimeter covering the central region of the ATLAS experiment. It is a sampling calorimeter with steel as absorber and scintillators as active medium. The scintillators are readout by wavelength shifting fibers coupled to photomultiplier tubes (PMTs). The TileCal response and its readout electronics are monitored to better than 1% using...
In this talk, we present the construction of Effective Field Theories (EFTs) in which a chiral fermion, charged under both gauge and global symmetries, is integrated out. These symmetries can be spontaneously broken, and the global ones might also be anomalous. This setting is typically served to study the structure of low-energy axion EFTs, where the anomalous global symmetry can be...
With the full Run 2 pp collision dataset collected at 13 TeV, very detailed measurements of Higgs boson coupling properties can be performed using a variety of final states, identifying several production modes and its decays into bosons and fermions and probing different regions of the phase space with increasing precision. These measurements can then be combined to exploit the strengths of...
The search for Dark Matter (DM) is one of the hottest topics of modern physics. Despite the various astrophysical and cosmological observations proving its existence, its elementary properties remain to date unknown. In addition to gravity, DM could interact with ordinary matter through a new force, mediated by a new vector boson (Dark Photon, Heavy Photon or A'), kinetically mixed with the...
The observation of 3-Jpsi production in a single pp collision is reported. The results are based on the data collected by the CMS experiment in 13 TeV pp collisions. The measured effective double parton scattering cross section is compared to the previous measurements.
We study the production of relativistic relics, also known as dark radiation, in the early Universe and precisely compute their current contribution to the extra number of effective neutrinos. One of the dark radiation candidates is the QCD axion produced from the primordial bath in the early universe. We consider KSVZ and DFSZ axion models and investigate the axion production at different...
In the context of the FCC IS European study, which investigates the feasibility of a 100 km circular $e^{+}e^{-}$ collider for the future high energy physics research, we present the status of the High Energy Booster (HEB) ring for the proposed $e^{+}e^{-}$ option. The HEB is the ring accelerating the electrons and positrons up to the nominal energy before injection into the collider. In order...
In this talk, we present the analytic evaluation of the virtual corrections
to the di-muon production in electron-positron collision in QED, up to the second order in fine structure constant, retaining the full dependence on
the muon mass and considering the electron as a massless particle.
We discuss the computational details, and the high-level of automation it required,
from the...
BESIII has collected 4.4 $fb^{-1}$ of $e^+e^-$ collision data between 4.6 and 4.7 GeV. This unique data offers ideal oppurtunity to determine absolute branching fractions of
$\Lambda_c^+$ decays. We will report the first observation of $\Lambda_c^+ -> n \pi^+$.
Meanwhile, we will report prospect on the studies of semileptonic and the other
hadronic decays of $\Lambda_c^+$ in the near future.
Within the upgrade program of the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC) for the HL-LHC data taking, the installation of a new timing layer to measure the time of minimum ionizing particles (MIPs) with a time resolution of ~30-40 ps is planned. The time information of the tracks from this new MIP Timing Detector (MTD) will improve the rejection of spurious...
The LHeC and the FCC-he will measure DIS cross sections and the partonic structure of protons and nuclei in an unprecedented range of small $𝑥$. In this kinematic region the non-linear dynamics expected in the high energy regime of QCD should be relevant in a region of small coupling. In this talk we will demonstrate the unique capability of these high-energy colliders for unravelling dynamics...
With the full Run 2 pp collision dataset collected at 13 TeV by the ATLAS experiment, it is now possible to perform detailed measurements of Higgs boson properties in many production and decay modes. In many cases, novel experimental techniques were developed to allow for these measurements. This talk presents a review of a representative selection of such novel techniques, including:...
The Deep Underground Neutrino Experiment (DUNE) is a next generation long baseline neutrino experiment for oscillation physics and proton decay studies. The primary physics goals of the DUNE experiment are to perform neutrino oscillation physics studies, search for proton decay, detect supernova burst neutrinos, make solar neutrino measurements and BSM searches. The liquid argon prototype...
We present a novel benchmark application of a quantum algorithm to Feynman loop integrals. The two on-shell states of a Feynman propagator are identified with the two states of a qubit and a quantum algorithm is used to unfold the causal singular configurations of multiloop Feynman diagrams. To identify such configurations, we exploit Grover's algorithm for querying multiple solutions over...
The high luminosity foreseen in the future electron-positron circular collider (FCC-ee) necessitates very intense multi-bunch colliding beams with very small transverse beam sizes at the collision points. This requires emittances comparable to those of the modern synchrotron light sources. At the same time, the stored beam currents should be close to the best values achieved in the last...
We suggest a new class of models – Fermionic Portal Vector Dark Matter (FPVDM) which extends the Standard Model (SM) with $SU(2)_D$ dark gauge sector. While FPVDM does not require kinetic mixing and Higgs portal, It is based on the Vector-Like (VL) fermionic doublet which couples the dark sector with the SM sector through the Yukawa interaction. The FPVDM model provides a vector Dark...
Automated perturbative computations of cross sections for hard processes in asymmetric hadronic/nuclear $A+B$ collisions at the next-to-leading (NLO) order in $\alpha_s$ will offer a wide range of applications, such as more robust predictions for new experimental programs, the phenomenology of heavy-ion collisions, and the interpretation of the LHC and RHIC data. Such a goal can be achieved...
The Cabibbo-Kobayashi-Maskawa (CKM) mechanism predicts that a single parameter must be responsible for CP-violating phenomena in different quark sectors of the Standard Model (SM). Despite this minimal picture, challenged by non-SM physics, the CKM mechanism has been so-far verified in the bottom and strange sectors, but lacks tests in the complementary charm sector. For the sake of this,...
For both the FCC-ee and the ILC, to exploit properly the respective precision physics program, the theoretical precision tag on the respective luminosity will need to be improved from the analogs of the 0.054 % (0.061%) results at LEP at $M_Z$, where the former (latter) LEP result has (does not have) the pairs correction. At the FCC-ee at $M_Z$ one needs improvement to 0.01%, for example. We...
The LHC luminosity will significantly increase in the coming years. Many of the current detectors in different subsystems need to be replaced or upgraded. The new ones should be capable not only to cope with the high particle rate, but also to provide improved time information to reduce the data ambiguity due to the expected high pileup. The CMS collaboration have shown that the new improved...
We assess the performance of different jet-clustering algorithms, in the presence of different resolution parameters and reconstruction procedures, in resolving fully hadronic final states emerging from the chain decay of the discovered Higgs boson into pairs of new identical Higgs states, the latter in turn decaying into bottom-antibottom quark pairs. We show that, at the Large Hadron...
Hidden particles can help explain many important hints for new physics, but the large variety of viable hidden sector models poses a challenge for the model-independent interpretation of hidden particle searches. We present techniques published in 2105.06477 and 2203.02229 that can be used to compute model-independent rates for hidden sector induced transitions. Adapting an effective field...
DUNE will be a next-generation experiment aiming to provide precision measurements of the neutrino oscillation parameters. It will detect neutrinos generated in the LBNF beamline at Fermilab, using a Near Detector (ND) situated near the beam target where the neutrinos originate and a Far Detector (FD) located 1300 km away in South Dakota. A comparison of the spectra of neutrinos measured at...
We consider Nielsen-Olesen vortices (abelian Higgs model in $2+1$ dimensions) under Einstein gravity in an AdS$_3$ background. We find numerically non-singular solutions characterized by three parameters: the cosmological constant $\Lambda$, the winding number $n$ and the vacuum expectation value (VEV) labeled by $v$. The mass (ADM mass) of the vortex is expressed in two ways: one involves...
In this contribution the nuclear modification factor ($R_\mathrm{AA}$) of prompt charm hadrons and heavy-flavour hadrons decaying to leptons measured in Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV by the ALICE Collaboration are presented. The measurement of heavy-flavour leptons in Xe-Xe collisions is also discussed. Heavy quarks are a very suitable probe to investigate the...
Leptoquarks are ubiquitous in several extensions of the Standard Model and seem to be able to accommodate the universality-violation-driven $B$-meson-decay anomalies and the $(g-2)_\mu$ discrepancy interpreted as deviations from the Standard Model predictions. In addition, the search for lepton-flavour violation in the charged sector is, at present, a major research program that could also be...
This talk will cover the latest searches for non resonant double Higgs boson production at CMS and interpretations in terms of the Higgs self-coupling. The talk will include the latest combination(s) of HH search channels.
The observations of the Advanced LIGO and Advanced Virgo gravitational-wave detectors have led so far to the confident identification of 90 signals, from the merger of compact binary systems constituted of black holes and neutron stars. These events have offered a new testing ground for General Relativity and better insights into the nuclear equation of state for neutron stars, as well as the...
In 2018, the European Commission (EC)’s Horizon 2020 Programme funded ATTRACT phase 1, which supported 170 breakthrough technology concepts in the domain of detection and imaging technologies across Europe. The projects were each granted €100,000 in seed funding to create a proof-of-concept. ATTRACT co-innovation approach seeks to act as a bridge between two communities – research and industry...
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to measure $D^0 -\overline{D}^0$ mixing and to search for $C\!P$ violation in mixing and interference. New measurements from several decay modes are presented, as well as prospects for future sensitivities.
The international FCC study group published in 2019 a Conceptual Design Report for an electron-positron collider with a centre-of-mass energy from 90 to 365 GeV, a circumference of 98 km and beam currents of up to 1.4 A per beam. The high beam current of this collider create challenging requirements on the injection chain and all aspects of the linac need to be carefully reconsidered and...
The Dark Higgs model is an extension of the Standard Model that describes the phenomenology of dark matter while respecting the SM gauge symmetries. This new approach opens regions of parameter space that are less covered by searches optimized for simpler models of dark matter. In this talk, we present such searches from CMS, focusing on the recent results obtained using the full Run-II...
The Belle II experiment is taking data at the asymmetric SuperKEKB collider, which operates at the Y(4S) resonance. The vertex detector is composed of an inner two-layer pixel detector (PXD) and an outer four-layer double-sided strip detector (SVD). The SVD-standalone tracking allows the reconstruction and identification, through dE/dx, of low transverse momentum tracks. The SVD information is...
The study of the associated production of vector bosons and jets constitutes an excellent environment to check numerous QCD predictions. Total and differential cross sections of vector bosons produced in association with jets have been studied in pp collisions using CMS data. Differential distributions as a function of a broad range of kinematical observables are measured and compared with...
Vector boson scattering is a key production process to probe the electroweak symmetry breaking of the standard model, since it involves both self-couplings of vector bosons and coupling with the Higgs boson. If the Higgs mechanism is not the sole source of electroweak symmetry breaking, the scattering amplitude deviates from the standard model prediction at high scattering energy. Moreover,...
We present a design project for a muon tomography detector aiming to the monitoring of glacier monitoring. The glacier melting process is not completely understood and is considered an hot topic in lieu of the global warming.
Muon Tomography is a widely used technique, employed to perform imaging of the inner structure of large objects, as volcanoes, container and pyramids. This technique...
Sources of geophysical noise (such as wind, sea waves and earthquakes) or of anthropogenic noise (nearby activities, road traffic, etc.) impact ground-based gravitational-wave (GW) interferometric detectors, causing transient sensitivity worsening and gaps in data taking.
During the one year-long third Observing Run (O3: from April 01, 2019 to March 27, 2020), the Virgo Collaboration...
In this talk the current status and plans are presented on the LHeC accelerator concept, towards the new HEP strategy update in about 5 years time. We review the ERL and the IR including the possibility of a joint $eh/hh$ interaction region. The talk also covers FCC-he and refers to a separate presentation of the ERL demonstration facility PERLE. It is based on the comprehensive Conceptual...
The measurement of pair-production of Higgs bosons is one of the key goals of the LHC. Also, beyond the standard model theories involving extra spatial dimensions predict resonances with large branching fractions in a pair of Higgs bosons with negligible branching fractions to light fermions. We present an overview of searches for resonant and nonresonant Higgs boson pair production at high...
We study the impact of triple-leptoquark interactions on matter stability for two specific proton decay topologies that arise at the tree- and one-loop level if and when they coexist. We demonstrate that the one-loop level topology is much more relevant than the tree-level one when it comes to the proton decay signatures despite the usual loop-suppression factor. We subsequently present...
Belle II is a new-generation B-factory experiment operating at the beam intensity frontier, SuperKEKB accelerator, dedicated to exploring new physics beyond the standard model of elementary particles in the flavor sector. Belle II started data-taking in April 2018, using a synchronous data acquisition (DAQ) system based on a pipelined trigger flow control. Belle II DAQ system is designed to...
The production of W/Z bosons in association with heavy flavor jets or hadrons at the LHC is sensitive to the heavy flavor content of the proton and provides an important test of perturbative QCD. We present the production of Z bosons in association with b-tagged large radius jets. The result highlights issues with modeling of additional hadronic activity and provides distinction between...
Searches in CMS for dark matter in final states with invisible particles recoiling against visible states are presented. Various topologies and kinematic variables are explored, including jet substructure as a means of tagging heavy bosons. In this talk, we focus on the recent results obtained using the full Run-II dataset collected at the LHC.
Heavy quarks are primarily produced via initial hard scatterings, and thus carry information about the early stages of the Quark-Gluon Plasma (QGP). Measurements of the azimuthal anisotropy of the final-state heavy flavor hadrons provide information about the initial collision geometry, its fluctuation, and more importantly, the mass dependence of energy loss in QGP. Due to the larger bottom...
The Jagiellonian Positron Emission Tomograph (J-PET) is a detector for: 1. medical imaging by combining metabolic information collected by standard PET with structural information obtained from Positronium lifetime in a concept of morphometric image, 2. tests of discrete symmetries, 3. and even test of quantum entanglement of photons originating from the decay of positronium atoms. The novelty...
In the Standard Model, the ground state of the Higgs field is not found at zero but instead corresponds to one of the degenerate solutions minimising the Higgs potential. In turn, this spontaneous electroweak symmetry breaking provides a mechanism for the mass generation of nearly all fundamental particles. The Standard Model makes a definite prediction for the Higgs boson self-coupling and...
The ProtoDUNE single phase detector (ProtoDUNE-SP) is a prototype liquid argon time projection chamber (LArTPC) for the first far detector module of the Deep Underground Neutrino Experiment (DUNE). ProtoDUNE-SP is installed at the CERN Neutrino Platform. Between October 10 and November 11, 2018, ProtoDUNE-SP recorded approximately 4 million events in a beam that delivers charged pions, kaons,...
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to measure direct $C\!P$ violation in $D$ mesons and charmed baryons. New measurements from several decay modes are presented, as well as prospects for future sensitivities.
Understanding leading non-perturbative corrections, showing up as linear power corrections, is crucial to properly describe observables both at lepton and hadron colliders.
Using an abelian model, we examine these effects for the transverse momentum distribution of a $Z$ boson produced in association with a jet in hadronic collisions, that is one of the cleanest LHC observables, where the...
This talk reviews recent measurements of multiboson production using CMS data. Inclusive and differential cross sections are measured using several kinematic observables.
The realisation of the LHeC and the FCC-he at CERN require the development of the energy recovering technique in multipass mode and for large current $\mathcal{O}(10)$ mA in the SRF cavities. For this purpose, a technology development facility, PERLE, is under design to be built at IJCLab Orsay, which has the key LHeC ERL parameters in terms of configuration, source, current, frequency and...
The Belle II experiment at the SuperKEKB e+e- collider has started data taking in 2018 with the perspective of collecting 50ab-1 during the next several years. The detector is working well with very good performance, but the first years of running are showing novel challenges and indicate the need for an accelerator consolidation and upgrade to reach the target luminosity of 6E35 cm-2s-1,...
The most precise measurements of single and double Higgs boson production cross sections are obtained from a combination of measurements performed in different Higgs boson production and decay channels. While double Higgs production can be used to directly constrain the Higgs boson self-coupling, this parameter can be also constrained by exploiting higher-order electroweak corrections to...
Multi-lepton signals provide a relatively clean and rich testing ground for new physics (NP) at the LHC and, in particular, for searching for lepton flavor universality violation (LFUV) effects mediated by new heavy states of an underlying TeV-scale NP. The potential sensitivity of 3rd generation fermions (the top-quark in particular) to TeV-scale NP along with the persistent anomalies in...
Silicon photomultipliers (SiPM) are solid-state photodetector consisting in arrays of hundreds to thousands of Single Photon Avalanche Diodes (SPADs) per mm$^2$. They feature a photon detection efficiency in excess of 40% at the peak sensitivity wavelength and guarantee an unprecedented photon number resolution at room temperature. These properties, along with low operation voltage,...
The Deep Underground Neutrino Experiment (DUNE) is part of the next generation of neutrino oscillation experiments that seek to definitively answer key questions in the field. It will utilize four 17-kt modules of Liquid Argon Time Projection Chambers (LArTPCs) enabling mm spatial resolutions for unprecedented sensitivity to neutrino oscillation paramters as well as for studies related to...
We present high-accuracy QCD predictions for the transverse-momentum (qT) distribution and fiducial cross sections of Drell-Yan lepton pairs produced in hadronic collisions. At small values of qT we resum to all perturbative orders the logarithmically enhanced contributions up to next-to-next-to-next-to-leading logarithmic (N3LL) accuracy, including all the next-to-next-to-next-to-leading...
Electron-hadron colliders are the ultimate tool for high-precision quantum chromodynamics studies and for probing the internal structure of hadrons. The Hadron Electron Ring Accelerator HERA (DESY, Hamburg, Germany) was the first and up to now only electron-hadron collider ever operated (1991-2007). In 2019 the U.S. Department of Energy initiated the Electron-Ion Collider (EIC) project, the...
Vector boson scattering (VBS) plays a central role in the search for new physics at collider experiments such as ATLAS and CMS at the LHC. Usually predictions for this kind of process are obtained using mainly perturbative approaches in fixed gauges.
In our work we investigate VBS in a manifestly fully gauge-invariant setup. To analyse the differences to gauge-fixed perturbation theory we are...
LHCb is playing a crucial role in the study of rare and forbidden decays of charm hadrons, which might reveal effects beyond the Standard Model. We present the latest searches for, and measurements using, rare charm decay processes with two leptons in the final state.
The addition of a Forward Calorimeter (FoCal) to the ALICE experiment is proposed for LHC Run 4 to provide unique constraints on the low-x gluon structure of protons and nuclei via forward measurements of direct photons. A new high-resolution electromagnetic Si-W calorimeter using both Si-pad and Si-pixel layers is being developed to discriminate single photons from pairs of photons...
Neutrino oscillations in matter offer a novel path to investigate new physics. The most recent data from the two long-baseline accelerator experiments, NO$\nu$A and T2K, show discrepancy in the standard 3-flavor scenario. Along the same line of discussion, we intend to explore the next generation of long-baseline experiments: T2HK and DUNE. We investigate the sensitivities of relevant NSI...
Gravitational-wave (GW) cosmology provides a new way to measure the expansion history of the Universe, based on the fact that GWs are direct distance tracers. This property allows at the same time to test gravity at cosmological scales, since in presence of modifications of General Relativity the distance inferred from GWs is modified - a phenomenon known as ''modified GW propagation''. On the...
The ‘4321’ gauge models are promising extensions of the SM that give rise to the $𝑈_1$ vector leptoquark solution to the 𝐵-physics anomalies. Both the gauge and fermion sectors of these UV-constructions lead to a rich phenomenology currently accessible by the Large Hadron Collider. In this talk we describe some of the main LHC signatures and extract exclusion limits using run-II data. In...
Recent HL-LHC studies that were performed by CMS within Snowmass activities are presented. Updates cover different physics topics from Higgs and SM processes.
The presence of a non-baryonic Dark Matter (DM) component in the Universe is inferred from the observation of its gravitational interaction. If Dark Matter interacts weakly with the Standard Model (SM) it could be produced at the LHC. The ATLAS experiment has developed a broad search program for DM candidates, including resonance searches for the mediator which would couple DM to the SM,...
Nb3Sn superconducting radiofrequency (SRF) cavities have the potential to expand new performance capabilities of particle accelerators for the benefit of both the fundamental science and the industrial applications, where potential applications among others include wastewater treatment and medical isotope production. For small-scale applications, Nb3Sn SRF creates the opportunity for a...
We present a parton-level study of electro-weak production of vector-boson pairs at the Large Hadron Collider, establishing the sensitivity to a set of dimension-six operators in the Standard Model Effective Field Theory (SMEFT). Different final states are statistically combined, and we discuss how the orthogonality and interdependence of different analyses must be considered to obtain the...
The strong force is the least known fundamental force of nature, and the effort of precisely measuring its coupling constant has a long history of at least 30 years. This contribution presents a new experimental method for determining the strong-coupling constant from the Sudakov region of the transverse-momentum distribution of Z bosons produced in hadron collisions through the Drell-Yan...
BESIII has collected 2.93 and 6.32 $fb^{-1}$ of $e^+e^-$ collision data samples at 3.773 and at 4.178-4.226 GeV, respectively. We will report the observation of $D^0 -> \omega \phi$ and the
transverse polarization determination, the observation of $D^0 -> K_LX (X=\eta, \eta',
\omega$, and $\phi$) and $K_S/K_L$ asymmetry measurements. Also, amplitude analyses of $D_s ->
K^+\pi^+\pi^-,...
The Future Circular Collider (FCC) study was launched as a worldwide international collaboration hosted by CERN with the goal of pushing the field to the next energy frontier beyond the LHC. The mass of particles that could be directly produced is increased by almost an order of magnitude, and the subatomic distances to be studied are decreased by the same proportion. FCC covers two...
Silicon PhotoMultipliers (SiPM) are rapidly approaching a significant maturity stage, making them a well recognised platform for the development of evolutionary and novel solutions in a wide range of applications for research and industry. However, they are still affected by stochastic terms, notably a significant Dark Count Rate (DCR) at the level of 50 kHz/mm^2 at room temperature, limiting...
In this talk, I will evaluate the potential for extremely high-precision astrometry of a small number of non-magnetic, photometrically stable hot white dwarfs (WD) located at $\sim$ kpc distances to access interesting sources in the gravitational-wave (GW) frequency band from 10 nHz to 1 $\mu$Hz. Previous astrometric studies have focused on the potential for less precise, large-scale...
Experimental hints for lepton flavor universality violation in beauty-quark decay both in neutral- and charged-current transitions require an extension of the Standard Model for which scalar leptoquarks (LQs) are the prime candidates. Besides, these same LQs can resolve the long-standing tension in the muon and the recently reported deviation in the electron $g-2$ anomalies. These tantalizing...
The experimental observation of the phenomena of neutrino oscillations was the first clear hint of physics beyond the Standard Model (SM). The SM needs an extension to incorporate the neutrino masses and mixing often called as beyond SM (BSM). The models describing BSM physics usually comes with some additional unknown couplings of neutrinos termed as Non Standard Interactions (NSIs) [1]. The...
The large dataset of about 3 $\rm ab^{-1}$ that will be collected at the High Luminosity LHC (HL-LHC) will be used to measure Higgs boson processes in detail. Studies based on current analyses have been carried out to understand the expected precision and limitations of these measurements. The large dataset will also allow for better sensitivity to di-Higgs processes and the Higgs boson self...
After the successful installation and first operation of the upgraded Inner Tracking System (ITS2), which consists of about 10 m2 of monolithic silicon pixel sensors, ALICE is pioneering the usage of bent, wafer-scale pixel sensors for the ITS3 for Run 4. Sensors larger than typical reticle sizes can be produced using the technique of stitching. At thicknesses of about 30 µm, the silicon is...
Top quark production can probe physics beyond the SM in different ways. The Effective Field Theory (EFT) framework allows searching for beyond the SM effects in a model independent way. The CMS experiment is pioneering EFT measurements that move towards using the full potential of the data in the most global way possible.
The discovery of dark matter is one of the challenges of high-energy physics in the collider era. Many Beyond-Standard Model theories predict dark matter candidates associated with the production of a single top-quark in the final state, the so-called mono-top. A search for events with one top quark and missing transverse energy in the final state is presented. This analysis explores the fully...
We will present results for a new, high precision, extraction of the strong coupling, $\alpha_s$, at the tau mass scale based on a more precise, non-strange, inclusive vector isovector spectral function. The new spectral function is obtained from a combination of (i) ALEPH and OPAL results for the $2\pi$ pion and $4\pi$ pion tau decay channels, (ii) recent BaBar results for the $\tau \to K^-...
The observed matter-antimatter asymmetry in the universe composes a serious
challenge to our understanding of nature. BNV/LNV decays have been searched in many
experiments to understand this large-scale observed fact, and few in the case of
$e^+e^-$ collision experiments are performed. In this talk, we present recent
results to search for BNV and LNV from $J/\psi$, $D^+$, $D^0$ and...
Beauty quark is one of the best probes of the Quark Gluon Plasma. Its large mass allows to probe the QGP transport properties in the heavy flavor sector through energy loss and diffusion. However, the hadronization of beauty is not as well understood as that of charm due to the smaller cross-section. Clarifying the hadronization mechanism is crucial for understanding the transport properties...
As part of the Physics Beyond Collider study group, the CERN Gamma Factory is an innovative proposal to exploit the potential of CERN to accelerate at ultra-relativistic energies partially stripped ion with high intensity such that their low lying atomic levels be excited by state of art optical systems. This may enable a very broad range of new applications from atomic physics to particle...
Superconducting radio frequency (SRF) cavities are the core technology for particle acceleration in modern accelerators, due to their extremely high quality factors as high as Q > 10^11. These make possible the continuous wave (CW) sustainment of very high electromagnetic fields inside the cavities with minimal dissipation in the cavity walls.
A few years ago, it was realized that the...
The measurement of the matter/antimatter asymmetry in the leptonic sector is one of the highest priority of the particle physics community in the next decades. The ESSnuSB collaboration proposes to design a long baseline experiment based on the European Spallation Source (ESS) at Lund in Sweden. This experiment will be able to measure the Delta_CP parameter with an unprecedent sensitivity...
We perform a complete study of four top quarks production at the LHC in the context of the Standard Model Effective Field Theory (SMEFT). Our analysis is conducted at the tree-level yet investigating all possible QCD- and EW-couplings orders for the contributing dimension-six SMEFT operators. We observe that the formally dominating contributions do not necessarily provide the largest...
I will present NNLO QCD calculation for Wbb production at the LHC. The computation of two-loop scattering amplitude using finite-field framework will be discussed and phenomenological results at the LHC sqrt{s}=8 TeV will be shown. The use of different flavoured jet algorithms will be explored and the comparison with CMS data will be presented.
ALICE 3 is proposed as the next-generation experiment to address unresolved questions about the quark-gluon plasma by precise measurements of heavy-flavour probes as well as electromagnetic radiation in heavy-ion collisions in LHC Runs 5 and 6. In order to achieve the best possible pointing resolution a concept for the installation of a high-resolution vertex tracker in the beampipe is being...
Belle has unique reach for a broad class of models that postulate the existence of dark matter particles with MeV—GeV masses. This talk presents recent world-leading physics results from Belle II searches for dark Higgstrahlung and invisible $Z^{\prime}$ decays; as well as the near-term prospects for other dark-sector searches.
We have investigated the many-body equations of $D$ and $\bar{B}$ mesons in a thermal medium by applying an effective field theory based on chiral and heavy-quark spin symmetries. Exploiting these symmetries within the kinetic theory, we have derived an off-shell Fokker-Planck equation which incorporates information of the full spectral function of these states.
I will present the latest...
Recent high precision determinations of $V_{us}$ and $V_{ud}$ indicate towards anomalies in the first row of the CKM matrix. Namely, the determination of $V_{ud}$ from beta decays and of $V_{us}$ from kaon decays imply a violation of first row unitarity at about $3\sigma$ level. Moreover, there is tension between determinations of $V_{us}$ obtained from leptonic $K\mu 2$ and semileptonic...
Next generation high energy physics experiment will be more granular than current ones, this means more demanding electronics to power the detectors and to process all collected data. Space constrains, cabling, cooling and, last but not least, efficiency are all parameters that need to be optimized during experiment design to have the best performance for data taking.
We will present some...
The mass of the W boson, one of the most important fundamental parameters in particle physics, is tightly constrained by the symmetries of the standard model. Following the observation of the Higgs boson and obtaining its measured mass, the standard model prediction of the W boson mass can be constrained to better than 10 MeV. An experimental measurement of the W boson mass to that level of...
Measurements of jet production in proton-proton collisions at the LHC are crucial for precise tests of QCD, improving the understanding of the proton structure and are important tools for searches for physics beyond the standard model. We present the most recent set of inclusive jet measurements performed using CMS data and compare them to various theoretical predictions.
The use of Application Specific Integrated Circuits (ASIC) is drastically increasing in nuclear and particle physics for applications that require a large number of acquisition channels, keeping the system compact with small power consumption. This work aims to explore the possibility to use the ASIC based Citiroc-1A chip, integrated in the CAEN A5202 Fers-5200 board, to acquire γ energy...
The ongoing U.S. Particle Physics Community Planning Exercise, “Snowmass 2021”, which is organized around discussions spanning ten scientific frontiers, will soon come to an end. This process will provide a scientific vision document for the future of the U.S. high energy physics (HEP) program and aims to define the most important questions for the field as well as to identify promising...
The proposal for a next-generation rare pion decay experiment, PIONEER, has recently been approved to the Paul Scherrer Institute (PSI) ring cyclotron.
PIONEER is strongly motivated by several inconsistencies between Standard Model (SM) predictions and data pointing towards the potential violation of lepton flavor universality. It will probe non-SM explanations of these anomalies through...
Many theories beyond the Standard Model predict new phenomena, such as heavy vectors or scalars, as well as vector-like quarks, in final states containing bottom or top quarks. Such final states offer great potential to reduce the Standard Model background, although with significant challenges in reconstructing and identifying the decay products and modelling the remaining background. The...
The constituents of dark matter are still unknown, and the viable possibilities span a very large mass range. Specific scenarios for the origin of dark matter sharpen the focus on a narrower range of masses: the natural scenario where dark matter originates from thermal contact with familiar matter in the early Universe requires the DM mass to lie within about an MeV to 100 TeV. Considerable...
The High Luminosity Large Hadron Collider (HL-LHC) at CERN is expected to collide protons at a center-of-mass energy of 14 TeV and to reach the unprecedented peak instantaneous luminosity of 7 x 10^34 cm^-2 s^-1 with an average number of pileup events of 200. This will allow the ATLAS and CMS experiments to collect integrated luminosities up to 4000 fb^-1 during the project lifetime. To cope...
Electromagnetic probes such as photons and dielectrons are a unique tool to study the space-time evolution of the hot and dense matter created in ultra-relativistic heavy-ion collisions. They are produced by a variety of processes during all stages of the collision with negligible final-state interactions. At low dielectron invariant mass ($m_{\rm ee}$), thermal radiation from the hot hadron...
We present high statistics measurements of primary cosmic rays Helium, Carbon, Oxygen, Neon, Magnesium, Silicon, Sulfur, Iron, and Nickel with AMS. The properties of He-C-O, Ne-Mg-Si, S, Fe and Ni fluxes are discussed.
The first-order electroweak phase transition (FOEWPT) plays an important role in the scenario of electroweak baryogenesis. In this talk, we discuss the first-order phase transitions in a new effective field theory. We show that the SMEFT is not appropriate when we discuss the FOEWPT. We also show that the parameter regions satisfying the sphaleron decoupling condition can be searched at future...
Fast neutron spectroscopic measurements are an invaluable tool for many scientific and industrial applications, in particular for Dark Matter (DM) searches. In underground DM experiments, neutron induced background produced by cosmic ray muons and the cavern radioactivity, can mimic the expected DM signal. However, the detection methods are complex measurements and thus measurements remain...
We present high statistics measurements of AMS-02 of the secondary cosmic rays Lithium, Beryllium, Boron, and Fluorine. The properties of the secondary cosmic ray fluxes and their ratios to the primary cosmic rays Li/C, Be/C, B/C, Li/O, Be/O, B/O, and F/Si are discussed. A systematic comparison with the latest GALPROP cosmic ray model is presented.
The strong electromagnetic field generated by the colliding nuclei in heavy-ion collisions can be represented by a spectrum of photons, leading to photon-induced interactions. While such interactions are traditionally studied in ultra-peripheral collisions (UPC) without any nuclear overlap, significant enhancements of dilepton pairs and J/$\psi$ production at very low transverse momentum...
Circular muon colliders offer the prospect of colliding lepton beams at unprecedented center-of-mass energies. The continuous decay of stored muons poses, however, a significant technological challenge for the collider and detector design. The secondary radiation fields induced by decay electrons and positrons can strongly impede the detector performance and can limit the lifetime of detector...
High energy e$^+$e$^-$ colliders offer unique possibility for the most general dark matter search based on the mono-photon signature. Analysis of the energy spectrum and angular distributions of photons from the initial state radiation can be used to search for hard processes with invisible final state production.
Most studies in the past focused on scenarios assuming heavy mediator exchange....
The Large Hadron Collider at CERN will undergo a major upgrade in the Long Shutdown 2 from 2026-2028. The High Luminosity LHC (HL-LHC) is expected to deliver peak instantaneous luminosities up to 7.5E34/cm2/s and an integrated luminosity in excess of 3000/fb during ten years of operation. In order to fully exploit the delivered luminosity and to cope with the demanding operating conditions,...
Electroweak W and Z bosons created in hard-scattering processes at the early stage of the collisions are efficient probes of the initial state of the collisions. While the measurements of W and Z bosons in p–Pb and Pb–Pb collisions provide insights on the nuclear modification of the parton distribution functions, the results in pp collisions are a stringent test of perturbative QCD-based...
The Standard Model effective field theory (SMEFT) provides a general framework
to include the effects of the beyond standard model physics residing at a certain higher energy scale $\Lambda$. We focus on the modification of top-quark Yukawa coupling, which is one of the important avenues to study EWSB. With this motivation, we consider the production of the tHq process at the LHC. In this...
Within the High Energy Physics community, when dealing with sensors of almost any sort, detection efficiency is certainly one of the key parameter at play. By further narrowing the field to pixel detectors, efficiencies of the order of 99% are the baseline, with far better figures actually characterising present state-of-the-art devices. Physics events are costly and time-consuming to produce,...
We present results of searches for massive vector-like third-generation quark and lepton partners using proton-proton collision data collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV. Pair production of vector-like leptons is studied, with decays into final states, containing third generation quarks and leptons. Vector-like quarks are studied in both single...
We present a minimal extension of the Type II Seesaw neutrino mass model with a spontaneously generated CP phase. We demonstrate that this minimal model that augments the Type II Seesaw framework by an additional right handed neutrino and an inert triplet can explain the neutrino oscillation data with minimal free parameters while providing a viable dark matter candidate.
Cosmic Nitrogen, Sodium, and Aluminum nuclei are a combination of primaries, produced at cosmic-ray sources, and secondaries resulting from collisions of heavier primary cosmic rays with the interstellar medium. We present high statistics measurements of the N, Na and Al rigidity spectra. We discuss the properties and composition of their spectra and present a novel model-independent...
The NA62 experiment at CERN collected world's largest dataset of charged kaon decays to di-lepton final states in 2016-2018, using dedicated trigger lines. Upper limits on the rates of several K+ decays violating lepton flavour and lepton number conservation, obtained by analysing this dataset, are presented.
The European Laboratory Directors Group (LDG) was mandated by CERN Council in 2021 to oversee the development of an Accelerator R&D High Energy Physics Accelerator Roadmap. To this end, a set of expert panels was convened, covering the five broad areas of accelerator R&D highlighted in the ESPPU, drawing upon the international accelerator physics community for their membership, and tasked to...
In the high-luminosity era of the Large Hadron Collider, the instantaneous luminosity is expected to reach unprecedented values, resulting in up to 200 proton-proton interactions in a typical bunch crossing. To cope with the resulting increase in occupancy, bandwidth and radiation damage, the ATLAS Inner Detector will be replaced by an all-silicon system, the Inner Tracker (ITk). The innermost...
Extensions of the Two Higgs Doublet model with a complex scalar singlet (2HDMS) can accommodate all current experimental constraints and are highly motivated candidates for Beyond Standard Model Physics. It can successfully provide a dark matter candidate as well as explain baryogenesis and provides gravitational wave signals. In this work, we focus on the dark matter phenomenology of the...
We present compact analytical expressions for neutrino oscillation probabilities, in the presence of invisible neutrino decay, where matter effects have been explicitly included. The probabilities are obtained both in the 2-flavor and 3-flavor formalisms.
The inclusion of decay leads to a non-Hermitian effective Hamiltonian, where the Hermitian component represents oscillation, and the...
The ORIGIN project (Optical Fiber Dose Imaging for Adaptive Brachytherapy), supported by the European Commission within the Horizon 2020 framework program, targets the production and qualification of a real-time radiation dose imaging and source localization system for both Low Dose Rate (LDR) and High Dose Rate (HDR) brachytherapy treatments, namely radiotherapy based on the use of...
High-precision intra-bunch-train beam orbit feedback correction systems have been developed and tested in the ATF2 beamline of the Accelerator Test Facility at the High Energy Accelerator Research Organization in Japan. Two systems are presented:
1) The vertical position of the bunch measured at two stripline beam position monitors (BPMs) is used to calculate a pair of kicks which are...
Ultrarelativistic Heavy Ions of large charge Z are accompanied by a large flux of
Weizs\"acker–Williams photons. This opens up the opportunity to study a variety of photo-induced nuclear processes, as well as photon-photon processes.
We would like to present a formalism which allows to calculate differential distributions of
leptons produced in semi-central (impact parameter < 2 $\times$...
The KOTO experiment studies the CP-violating rare decay $K_L \to \pi^0 \nu \overline{\nu}$, conducting with the 30-GeV Main Ring Proton Synchrotron at J-PARC in Japan. In the previous analysis on data taken in 2016-18, we found three candidate events in the signal region with a single event sensitivity of $7\times 10^{-10}$, which is statistically consistent with the background expectation....
The quest for new physics beyond the Standard Model is boosted
by the recently observed deviation in the anomalous magnetic moments of
muon and electron from their respective theoretical prediction.
In the present work, we have proposed a suitable
extension of the minimal $L_{\mu}-L_{\tau}$ model to address
these two experimental results as the minimal
model is unable to provide any...
AMoRE (Advanced Mo-based Rare process Experiment) is an international project to search for the neutrinoless double beta (0$\nu\beta\beta$) decay of $^{100}$Mo in enriched Mo-based scintillating crystals using metallic magnetic calorimeters in a mK-scale cryogenic system. The project aims at operating the detector in a zero-background condition to detect this extremely rare decay event in the...
Muon tomography consists in using muons naturally produced by cosmic rays interactions with the high atmosphere to probe structures in a neither invasive nor destructive way. Following the first muography of a water tower using a muon telescope based on Micro-Pattern Gaseous Detectors and developed at Commissariat à l’énergie atomique et aux énergies alternatives (CEA) Saclay in 2015, the...
Measurements of event shapes and jet substructure observables can serve as in-depth probes of the strong interactions. Data on deep-inelastic scattering collected at the HERA $ep$ collider using the H1 detector have been analysed in the kinematic region of large momentum transfer $Q^2>150$ GeV$^2$. Various new measurements of the hadronic final state, as listed in the following, are presented...
Beryllium nuclei are expected to be mainly produced by the fragmentation of primary cosmic rays (CR) during their propagation. Therefore, their measurement is essential in the understanding of cosmic ray propagation and sources. In particular, the $^{10}$Be/$^9$Be ratio can be used as a radioactive clock providing the measurement of CR residence time in the Galaxy. In this contribution, the...
We present a threshold resummation calculation for the associated production of squarks and gauginos at the LHC to the next-to-leading logarithmic (NLL) accuracy, matched to next-to-leading order (NLO) QCD corrections. Analytical results are obtained for the process-dependent soft anomalous dimension and the hard matching coefficient. Numerically, the NLL contributions increase the total NLO...
The High Luminosity Large Hadron Collider (HL-LHC) is expected to provide an integrated luminosity of 4000 fb-1, that will allow to perform precise measurements in the Higgs sector and improve searches of new physics at the TeV scale.
The HL-LHC higher particle fluences and will requested radiation hardness, the increased average proton-proton pile-up interactions, require a significant...
Axion, a hypothetical pseudo-scalar particle, is a direct consequence of Peccei-Quinn mechanism which was proposed to solve the strong CP problem in 1977. It is also a plausible candidate for dark matter. The axion feebly interacts with the Standard Model (SM) particles, which makes it extremely challenging to detect a sign of its existence. Nevertheless, there have been many efforts to search...
We review recent CMS results on diffractive and exclusive processes in heavy ion collisions, including photon-induced processes in ultraperipheral collisions.
The KLOE-2 Collaboration continues the KLOE long-standing tradition of flavour physics precision measurements in the kaon sector with a new $K_S \to \pi e \nu$ branching fraction measurement.
Based on a sample of 300 million $K_S$ mesons produced in $\phi \to K_L K_S$ decays recorded by the KLOE experiment
at the DA$\Phi$NE $e^+e^-$ collider, the $K_S \to \pi e \nu$ signal selection...
Analysis of anisotropy of the arrival directions of galactic protons, helium, carbon and oxygen has been performed with the Alpha Magnetic Spectrometer on the International Space Station. These results allow to investigate the origin of the spectral hardening observed by AMS in these cosmic ray species. The AMS results on the dipole anisotropy are presented along with the discussion of the...
Results from the CMS experiment are presented for supersymmetry searches targeting so-called compressed spectra. Those have small mass splittings between the different supersymmetric partners. Such a spectrum presents unique experimental challenges. This talk describes the new techniques utilized by CMS to address such difficult scenarios. The searches use proton-proton collision data with...
We use the Fitmaker tool to incorporate the recent CDF measurement of $m_W$ in a global fit to electroweak, Higgs, and diboson data in the Standard Model Effective Field Theory (SMEFT) including dimension-6 operators at linear order. We find that including any one of the SMEFT operators ${\cal O}_{HWB}$, ${\cal O}_{HD}$, ${\cal O}_{\ell \ell}$ or ${\cal O}_{H \ell}^{(3)}$ with a non-zero...
In particle therapy, proton or ion beams deposit a large fraction of their energy at the end of their paths, i.e. the delivered dose can be focused on the tumor, sparing nearby tissue due to a low entry and almost no exit dose. A novel imaging modality using protons promises to overcome some limitations of particle therapy and will allow the full exploitation of its potential. Being able to...
Neutrino physics lies among the most obscure and fascinating sections of the Standard Model particle landscape. In particular, the measurement of their absolute mass is still an unresolved issue pursued by several experiments over the years. The state of the art concerning the model-independent $\nu$ mass hunting is KATRIN. Reaching its ultimate goal, it will push to the extreme the...
The high luminosity upgrade for the Large Hadron Collider at CERN requires a complete overhaul of the current inner detectors of ATLAS and CMS. These new detectors will consist of all-silicon tracking detectors. A serial powering scheme has been chosen in order to cope with the various constraints of the new detectors. In order to verify this new powering scheme and provide input for various...
The hybrid-symmetric lattice was studied extensively using high-precision spin and beam dynamics simulation software programs. A storage ring, where the bending is provided by electric field plates while focusing is achieved by magnetic quadrupoles with alternating sign fields, can effectively store polarized proton beams simultaneously. This is the only known configuration where the main...
We consider the direct-detection rate for Majorana dark matter scattering
off nuclei in an SU(2) × U(1) invariant effective theory and we compare it against the LHC reach. Current constraints from direct detection experiments are already bounding the mediator mass to be well into the TeV range for WIMP-like scenarios. This motivates a consistent and systematic exploration of the parameter...
The quantum interference between the decays of entangled neutral kaons is a very powerful tool for testing the quantum coherence of the entangled kaon pair state. The studied process φ → KS KL → π+ π− π+ π− exhibits the characteristic Einstein–Podolsky–Rosen correlations that prevent both kaons to decay into π + π − at the same time. The newly published result is based on data sample...
The original idea that a quantum machine can potentially solve many-body quantum mechanical problems more efficiently than classical computers is due to R. Feynman who proposed the use of quantum computers to investigate the fundamental properties of nature at the quantum scale. In particular, the solution of problems in electronic structure, many-body physics, and high energy physics (just to...
The Electron Capture in $^{163}$Ho experiment (ECHo) is a running experiment for the determination of the neutrino mass scale via the analysis of the end point region of the $^{163}$Ho electron capture spectrum. In the first phase, called ECHo-1k, data was collected for several months with about 60 metallic magnetic calorimeter (MMC) pixels enclosing $^{163}$Ho for an activity of about 1Bq per...
The precision measurement of daily proton fluxes with AMS during ten years of operation in the rigidity interval from 1 to 100 GV is presented. The proton fluxes exhibit variations on multiple time scales. From 2014 to 2018, we observed recurrent flux variations with a period of 27 days. Shorter periods of 9 days and 13.5 days are observed in 2016. The strength of all three periodicities...
The energy frontier of particle physics is pushed forward by implementation of innovative technologies and approaches. Bent crystals can be used as a novel type of beam optics with steering power comparable to that of a magnetic dipole up to over $10^3$ Tesla by exploiting the phenomenon of planar channeling. Several applications in accelerators have been proposed, such as beam extraction, and...
A proper understanding of non-perturbative effects, which manifest themselves as linear power corrections, is needed to describe many observables measured at colliders. We report on recent progress in the calculation of linear power corrections to shape variables such as the $C$-parameter and thrust in the three-jet region arising from infrared renormalons. Previously, only the results at the...
In scenarios with very small dark matter (DM) couplings and small mass splittings between the DM and other dark-sector particles, so-called "coscattering" or "conversion-driven freeze-out" can be the dominant mechanism for DM production. We present the inclusion of this mechanism in micrOMEGAs together with a case study of the phenomenological implications in the singlet-triplet model. For the...
The upgrade to the High-Luminosity LHC (HL-LHC), with its increase to 140-200 proton-proton collisions per bunch crossing, poses formidable challenges for track reconstruction. The Inner Tracker (ITk) is a silicon-only replacement of the current ATLAS tracking system as part of its Phase-II upgrade, designed to meet the challenges and continue to deliver high-performance track reconstruction....
We study in detail the viability and the patterns of a strong first-order electroweak phase transition as a prerequisite to electroweak baryogenesis in the framework of $Z_3$-invariant Next-to-Minimal Supersymmetric Standard Model (NMSSM), in the light of recent experimental results from the Higgs sector, dark matter (DM) searches and those from the searches of the lighter chargino and...
The detailed measurement of the positron fluxes from May 20, 2011 to October 29, 2019 with the Alpha Magnetic Spectrometer on the International Space Station, is presented. Time variation of the fluxes on different time scales associated with the solar activity over half solar cycle 24 is shown. The measured effect of charge sign dependent effects on particles with the same mass is discussed.
The Future Circular Collider (FCC) is a post-LHC project aiming at direct and indirect searches for physics beyond the SM in a new 100 km tunnel at CERN. In addition, the FCC-ee offers unique possibilities for high-precision studies of the strong interaction in the clean environment provided by e+e- collisions, thanks to its broad span of center-of-mass energies ranging from the Z pole to the...
Since its launch, the Alpha Magnetic Spectrometer-02 (AMS-02) has delivered outstanding quality measurements of the spectra of cosmic-ray (CR) species, which resulted in a number of breakthroughs. Some of the most recent AMS-02 results are the measurements of the spectra of CR fluorine, sodium and aluminum up to 2 TV. Given their low solar system abundances, a significant fraction of each...
HEPscape is an escape room about high energy physics. The project has been designed and created by researches from the National Institute of Physics in Rome with the support of Sapienza, University of Rome.
Escape rooms for learning purposes are more and more frequent nowadays. HEPscape represents, based on the knowledge of the authors, the first particle physics escape room ever built so...
The LHC-forward experiment (LHCf), located at the Large Hadron Collider (LHC), is designed to measure the production cross section of neutral particles in the very-forward region, covering the pseudorapidity region above 8.4 (up to zero-degree particles). By measuring the very-forward particle production rates at the highest energy possible at an accelerator, LHCf will provide fundamental...
We discuss the phase diagram of QCD in the presence of a strong magnetic background field, providing numerical evidence, based on lattice simulations of QCD with 2+1 flavours and physical quark masses, that the QCD crossover turns into a first order phase transition for large enough magnetic field, with a critical endpoint located between $eB = 4$ GeV$^2$ (where we found an analytic crossover...
ALICE has undergone a major upgrade in preparation of LHC Run 3 (2022-2025). The new Inner Tracking System is completely based on Monolithic Active Pixel Sensors, the Time Projection Chamber was equipped with GEM-based readout chambers, and the muon system was upgraded and extended by the Muon Forward Tracker. New trigger detectors were also installed to allow the clean identification of...
We present searches for additional neutral and charged Higgs boson with the CMS detector using the full run 2 dataset. The presented searches also include decays of heavy Higgs bosons into other Higgs bosons (both the 125 GeV Higgs boson and other additional Higgs bosons).
Circular colliders have the advantage of delivering collisions to multiple interaction points (up to 4 IPs for e+e- collisions at the FCC-ee facility) that allow for different detector designs to be studied and optimized individually aiming at complementary physics target studies. On the one hand, the detectors must satisfy the constraints imposed by the invasive interaction region layout. On...
The super-weak model is a particle physics model which extends the Standard Model (SM) by a new U(1) gauge symmetry. In addition to the new mediator $Z'$, a scalar particle $\chi$ is added to deal with the meta-stability of the SM vacuum, and right-handed neutrinos are introduced to account for the non-vanishing neutrino masses. In this talk, we investigate the cosmological implications of...
Lepton flavor violation in the charged lepton sector (cLFV) is expected to be unobservably small in the Standard Model (SM). On the other hand, many new physics theories predict rates of cLFV near the sensitivity of the current experiments. Hence, this is a very sensitive probe for physics beyond the SM, and the evidence for such new physics would be unambiguous if a positive observation is...
The Particle Physics Community Planning Exercise (a.k.a. “Snowmass”) is the form of organization of regular, every 6 to 8 years, discussions among the entire particle physics community to develop a scientific vision for the future of particle physics in the U.S. and its international partners. The Snowmass'21 Accelerator Frontier activities
include discussions on high-energy hadron and...
The reconstruction of electrons and photons in CMS depends on topological clustering of the energy deposited by an incident particle in different crystals of the electromagnetic calorimeter (ECAL). These clusters are formed by aggregating neighbouring crystals according to the expected topology of an electromagnetic shower in the ECAL. The presence of upstream material causes electrons and...
The Circular Electron Positron Collider is a proposed, high luminosity factory for massive SM particles. It aims to deliver millions of Higgs bosons, trillions of Z bosons, hundreds millions of W bosons in 10 - 20 years of data taking, and has the potential to upgrade its center of mass energy to 360 GeV, producing decent statistics of t-tbar events. The CEPC is expected to search for New...
Neutron star (NS) as the dark matter (DM) probe has gained a broad
attention recently, either from heating due to DM annihilation or
its stability under the presence of DM. In this work, we investigate
spin-$1/2$ fermionic DM $\chi$ charged under the $U(1)_{X}$
in the dark sector. The massive gauge boson $V$ of
$U(1)_{X}$ gauge group can be produced in NS via DM annihilation. The produced...
In light-front holographic QCD a Schr\"{o}dinger-like equation determines the transverse mode in the chiral limit. The supersymmetric formulation of holographic QCD each baryon has two supersymmetric partners, a meson and a tetraquark. The mass degeneracy of these partner states is lifted by the combination of two mechanisms: chiral symmetry breaking and longitudinal confinement. In this...
We perform an analysis of leptogenesis in the context of a simple extension of the Standard Model with two fermions, one charged ($\chi $) and one neutral ($\psi$), in addition to three right-handed neutrinos, interacting through a charged gauge singlet scalar $S$. The dark sector ($\chi$, $\psi$ and $S$) interacts feebly and produces a relic density consistent with the existing data. The ...
We present a study of the process $e^+e^- \to \pi^+\pi^-\pi^0$ at $BABAR$ using the initial-state radiation technique. The analysis is based on the full $BABAR$ data set, 469 fb$^{-1}$, recorded at and near the $\Upsilon(4{\mathrm{S}})$ resonance. From the fit to the measured $3\pi$ mass spectrum we determine the products $\Gamma(V\to e^+e^-){\cal{B}}(V\to 3\pi)$ for the omega and phi...
The MicroBooNE detector is a liquid argon time projection chamber (LArTPC) with an 85 ton active mass that receives flux from the Booster Neutrino and the Neutrinos from the Main Injector (NuMI) beams, providing excellent spatial resolution of the reconstructed final state particles. Since 2015 MicroBooNE has accumulated many neutrino and anti-neutrino scattering events with argon nuclei...
We present searches for rare and beyond-the-standard-model decays of the Higgs boson with the CMS detector using the full run 2 dataset. Amongst others, Higgs boson decays to two (pseudo-) scalars and to invisible particles are discussed.
This contribution presents “The Hidden Force. Women Scientists in Physics and in History”, where the lives of four twentieth-century female scientists, who overcame the stereotypes of their era, invite us to discover the importance of women's contributions to the advancement of knowledge. This is actually more than a theatre play for science outreach, it is a project to nurture a dialog with...
The Mu3e experiment at the Paul-Scherrer-Institut searches for the charged lepton flavour violating decay $\mu^+\rightarrow e^+e^-e^+$. This decay mode is extremely suppressed in the Standard Model, such that any observation would be a clear signature for new physics being at play. The experiment will be conducted in two phases. In Phase I, a single event sensitivity of $2 \times 10^{-15}$ is...
During the long shutdown 2, the ALICE experiment undertook major detector and software upgrades bringing a paradigm shift in the operation and performance of the new detector.
Run 3 started at the end of October 2021 with the first colliding proton-proton beams, the so-called "pilot beam". On this occasion, the ALICE experiment successfully recorded pp collisions at 900 GeV, proving its...
This contribution presents the status of the HL-LHC project, the draft schedule and the associated operational scenarios. The contribution will focus on expected beam parameters, machine optics and cycles, and performance estimates.
Precision studies of the properties of the Higgs and gauge bosons may provide a unique window for the discovery of new physics at the LHC. New phenomena can in particular be revealed in the search for lepton-flavor-violating or exotic decays of the Higgs and Z bosons, as well as in their possible couplings to hidden-sector states that do not interact under Standard Model gauge transformations....
The MicroBooNE collaboration recently released a series of measurements aimed at investigating the nature of the excess of low-energy electromagnetic shower events observed by the MiniBooNE collaboration. In this talk, we will present the latest results from both a search of single photons in MicroBooNE, as well as a series of three independent analyses leveraging different reconstruction...
While simulation is a crucial cornerstone of modern high energy physics, it places a heavy burden on the available computing resources. These computing pressures are expected to become a major bottleneck for the upcoming high luminosity phase of the LHC and for future colliders, motivating a concerted effort to develop computationally efficient solutions. Methods based on generative machine...
The Extreme Energy Events Project (EEE) represented since its starting phases in 2005 a breakthrough in outreach activities in High Energy Physics. The innovative idea of EEE is a strong and direct involvement of high school students in the construction and operation of an experiment to measure Extensive Atmospheric Showers (EAS) on Earth surface.
The EEE Project is based on an array of...
We present new lattice results of the ETM Collaboration, obtained from extensive simulations of lattice QCD with dynamical up, down, strange and charm quarks at physical mass values, different volumes and lattice spacings, concerning the SM prediction for the so-called intermediate window (W) and short-distance (SD) contributions to the leading order hadronic vacuum polarization (LOHVP) term...
The future circular electron-positron collider (FCCee) is receiving much attention in the context of the FCC Feasibility Study currently in progress in preparation for the next EU strategy update. We present IDEA, a detector concept optimized for FCCee and composed of a vertex detector based on DMAPS, a very light drift chamber, a silicon wrapper, a dual readout calorimeter outside a thin 2...
Scattering amplitudes are the fundamental building blocks of collider observables. Comparing high precision measurements to theory predictions requires computing them to high perturbative order. The growth in the number of loops significantly increases the complexity of the problem. Using novel mathematical methods allowed to compute QCD corrections to four-point massless processes at...
Precision measurements of flavour-violating processes are a sensitive tool to search for signals beyond the Standard Model (SM). In this context, the MEG II and Mu3e experiments at the Paul Scherrer Institut (PSI) search for the two muon decays $\mu^+ \to e^+\gamma$ and $\mu^+ \to e^+e^-e^+$, respectively. In addition to their main channels, both experiments appear to be competitive in...
Present and upcoming neutrino experiments can be used to probe Dark Sectors (DS).
We consider light DS interacting with the SM through well-motivated irrelevant portals. In our model independent approach, the DS is only characterized by two scales: the cut-off scale ΛUV of the irrelevant portals , and the mass gap ΛIR of the DS, identified with the mass of its lightest particle (LDSP). If the...
The Large Hadron Collider (LHC) recently completed its Run-2 operation period (2015-2018) which delivered an integrated luminosity of 156 fb-1 at the centre-of-mass $pp$ collision energy of 13~TeV. This marked 10 years of successful operation by the ATLAS Semiconductor Tracker (SCT), which operated during Run-2 with instantaneous luminosity and pileup conditions that were far in excess of what...
Following the recommendations of the 2020 update of the European Strategy for Particle Physics (ESPP), CERN, in collaboration with many institutes around the globe, is investigating the feasibility of a 100 TeV centre-of-mass hadron collider with an electron-positron collider as a pre-stage.
This study builds upon the conceptual design reports delivered by the Future Circular Collider (FCC)...
Commonly known as Boltzmann suppression is the key ingredient to create chemical imbalance for thermal dark matter. In a degenerate/quasi degenerate dark sector chemical imbalance can also be generated from a different mechanism which is analogous to the radioactive decay law, known as co-decaying dark matter. In this work, we have studied the dynamics of a multicomponent thermally decoupled...
GRaffa is a project designed and carried out by the Associazione Giovanile Le Scie Fisiche, funded by Lazio Region, with the aim of sharing the excitement of science and increasing appreciation for it, mainly through daily experiences of physical phenomena. It was conceived by young physics and philosophy researchers (mainly postdocs and PhD students) to spread physics and scientific culture...
The anomalous magnetic moment of the muon $a_\mu = (g-2)_\mu/2$ has been measured at the Brookhaven National Laboratory in 2001 and recently at the Fermilab Muon $g - 2$ Experiment. The results deviate by 4.2 $\sigma$ from the Standard Model predictions, where the most dominant source of theoretical error comes from the Hadronic Leading Order (HLO) contribution $a_\mu^{\mathrm{HLO}}$. MUonE is...
During Run 2 of the Large Hadron Collider at CERN, the LHCb experiment has spent more than 80% of the pledged CPU time to produce simulated data samples. The upcoming upgraded version of the experiment will be able to collect larger data samples, requiring many more simulated events to analyze the data to be collected in Run 3. Simulation is a key necessity of analysis to interpret signal vs...
The aim of this presentation is to introduce a dark extension of the SM that communicates to it through three portals: neutrino, vector and scalar mixing, by which it could be possible to explain the LEE at MiniBooNE. In the model, Heavy Neutral leptons are produced by upscattering via a dark photon, with masses around 10 MeV – 2 GeV, and subsequently decay into an electron-positron pair and...
The IDEA drift chamber is designed to provide efficient tracking, a high precision momentum measurement, and excellent particle identification by exploiting the cluster counting technique. The ionization process by charged particles is the primary mechanism used for particle identification (dE/dx). However, the significant uncertainties in the total energy deposition represent a limit to the...
The QCD topological observables are essential inputs to obtain theoretical predictions about axion phenomenology, which are of utmost importance for current and future experimental searches for this particle. Among them, we find the topological susceptibility, related to the axion mass.
We present lattice results for the topological susceptibility in QCD at high temperatures obtained...
The low-background environment of electron-positron collisions along with the large expected sample size and an hermetic detector make Belle II the premier experiment for studying tau-lepton physics. This talk presents recent world-leading physics results from Belle II searches for tau decays into a scalar non-SM particle and a lepton. Perspectives on tests of lepton (flavor) universality and...
The tracking performance of the ATLAS detector relies critically on its 4-layer
Pixel Detector. As the closest detector component to the interaction point, this detector is subjected to a significant amount of radiation over its lifetime. By the end of the LHC proton-proton collision RUN2 in 2018, the innermost layer IBL, consisting of planar and 3D pixel sensors, had received an integrated...
The International Linear Collider (ILC) is an electron–positron collider with a total length of around 20 km in its initial configuration as a 250 GeV centre-of-mass energy Higgs factory.
Key technologies at ILC are superconducting RF (SRF) acceleration in the main linacs and nano-beam technology at the interaction point (IP). A total of about 8,000 superconducting niobium cavities will be...
Tau leptons are a key ingredient to perform many Standard Model measurements and searches for new physics at LHC. The CMS experiment has released a new algorithm to discriminate hadronic tau lepton decays against jets, electrons, and muons. The algorithm is based on a deep neural network and combines fully connected and convolutional layers. It combines information from all individual...
In 2018 CMS reported an excess in the light Higgs-boson search in the diphoton decay mode at about 95GeV based on Run 1 and first year Run 2 data. The combined local significance of the excess was $2.8\,\sigma$. The excess is compatible with the limits obtained in the ATLAS searches from the diphoton search channel. Recently, CMS reported another local excess with a significance of...
We calculate the relativistic six-meson scattering amplitude at low energy within the framework of QCD-like theories with $n$ degenerate quark flavors at next-to-leading order in the chiral counting. We discuss the cases of complex, real and pseudo-real representations, i.e. with global symmetry and breaking patterns $\text{SU}(n)\times\text{SU}(n)/\text{SU}(n)$ (extending the QCD case),...
The latest measurement of the muon g-2 announced at Fermilab exhibits a 4.2$\sigma$ discrepancy from the currently accepted Standard Model prediction. The main source of uncertainty on the theoretical value is represented by the leading order hadronic contribution $a_{\mu}^{HLO}$, which is traditionally determined through a data-driven dispersive approach. A recent calculation of...
The Short-Baseline Near Detector (SBND) will be one of three liquid Argon Time Projection Chamber (LArTPC) neutrino detectors positioned along the axis of the Booster Neutrino Beam (BNB) at Fermilab, as part of the Short-Baseline Neutrino (SBN) Program. The detector is currently in the construction phase and is anticipated to begin operation in the first half of 2023. SBND is characterised by...
The IDEA detector concept for a future e+e− collider adopts an ultra-low mass drift chamber as central tracking system. The He based ultra-low mass drift chamber is designed to provide efficient tracking, a high precision momentum measurement, and excellent particle identification by exploiting cluster counting technique. Studies with the Garfield++ simulation confirm that the cluster counting...
Gravity is, by far, one of the scientific themes that have most piqued the curiosity of scientists and philosophers over the centuries. From Aristotle to Einstein, from Hawking to now on, scientists have always put a creative effort to solve the main puzzles of the understanding of our universe: why do things move, the birth of the cosmos, dark matter, and dark energy are just a few examples...
We report a partial wave analysis conducted in $\tau^{-} \to \pi^{-}\pi^{-}\pi^{+}\nu$ decays, where it is expected that the new resonance $\text{a}_1(1420)$ that has been observed by COMPASS experiment can be studied as well as which provides the detailed study of $\text{a}_1(1260)$. In addition, we report the searches for New Physics in $\tau$ decays, especially with its decay involving...
We study a minimal model of pseudo-Dirac dark matter, interacting through transition electric and magnetic dipole moments. Motivated by the fact that xenon experiments can detect electrons down to ∼keV recoil energies, we consider O(keV) splittings between the mass eigenstates. We study the production of this dark matter candidate via the freeze-in mechanism. We discuss the direct detection...
The Compact Muon Solenoid (CMS) a general purpose experiment to explore the physics of the TeV scale in $pp$-collisions provided by the CERN LHC. Muons constitute an important signature of new physics and their detection, triggering, reconstruction and identification is guaranteed by various subdetectors using different detection systems: Drift Tubes (DT) and Resistive Plate Chambers (RPC) in...
The LHCb experiment is currently undergoing its Upgrade I, which will allow it to collect data at a five-times larger instantaneous luminosity. In a decade from now, the Upgrade II of LHCb will prepare the experiment to face another ten-fold increase in instantaneous luminosity. Such an increase in event complexity will pose unprecedented challenges to the online-trigger system, for which a...
In the past decade, antenna subtraction has been used to compute NNLO QCD corrections to a series of phenomenologically relevant processes. However, as for other subtraction schemes at NNLO, the application of this method proceeded in a process-dependent way, with each new calculation requiring a significant amount of work. In this talk we present an improved version of antenna subtraction...
Self-interaction of particulate dark matter may help thermalising the galactic center and driving core formation. The core radius is expectedly sensitive to the self-interaction strength of dark matter. In this work we study the feasibility of constraining dark matter self-interaction from the distribution of core radius in isolated haloes. We perform systematic $N$-body simulations of...
The leading-order (LO) hadronic vacuum polarization (HVP) contribution to the muon $g$-$2$, $a_{\mu}^{\rm HVP}(\rm LO)$, is traditionally computed via dispersive "time-like" integrals using measurements of the hadronic production cross-section in $e^{-}e^{+}$ annihilations. An alternative method is provided by lattice QCD. At LO, simple "space-like" formulas are well-known and form the basis...
The Circular Electron Positron Collider (CEPC) is designed to operate at center-of-mass energies of 240 GeV as a Higgs factory, as well as at the Z-pole and the WW production threshold for electroweak precision measurements and study of flavor physics. A good particle identification on charged hadrons is essential for the flavor physics and jet study. To meet this requirement, a tracker with a...
Motivated by results recently reported by the CMS Collaboration about an excess in the di-photon spectrum at about 96 GeV, especially when combined with another long-standing anomaly at the same value in the $b\bar b$ invariant mass spectrum in four-jet events collected at LEP, we show that a possible explanation to both phenomena can be found at 1$\sigma$ level in a generic 2-Higgs Doublet...
The Short Baseline Near Detector (SBND), a 112 ton liquid argon time projection chamber, is the near detector of the Short Baseline Neutrino program at Fermilab. SBND has the unique characteristic of being remarkably close (110 m) to the neutrino source and not perfectly aligned with the neutrino beamline, in such a way that the detector is traversed by neutrinos coming from different angles...
In 2016 INFN created a National Committee to coordinate third missione activities. One of its aim was to improve the quality of its local outreach activities. INFN results for VQR (the Italian national exercise to evaluate research quality)2011-2014 showed a clear difference in the quality of outreach activities organized by the Communication Office, and -despite the enthusiasm of the people...
Recently the muon collider has been recognised as an important option to be
considered for the future of particle physics.
It is part of the European Accelerator R&D Roadmap developed in 2021 and
approved by Council. Also interest is rising in the Amerikas and in Asia,
for example demonstrated by the ongoing Snowmass process.
The presentation will give an introduction into the muon...
We study scenarios where Dark Matter is a weakly interacting particle (WIMP) embedded in an ElectroWeak (EW) multiplet. In particular, we consider both real SU(2) representations with hypercharge $Y=0$, that automatically avoid direct detection constraints from tree-level $Z$-exchange, and complex ones with $Y\neq 0$. In the latter case, the minimal inelastic splitting between the DM and its...
The spontaneous muonium to antimuonium conversion is one of the interesting
charged lepton flavor violation processes. It serves as a clear indication of
new physics and plays an important role in constraining the parameter space
beyond Standard Model. MACE is a proposed experiment to probe such a phenomenon
and expected to enhance the sensitivity to the conversion probability by...
The LHCb experiments is in the commissioning phase of an ambitious upgrade project that will allow improved sensitivity to interesting beauty and charm decays with a combination of higher luminosity and the deployment of a purely software trigger. A key element of the trigger is a fast-tracking algorithm based on the vertex detector, and a tracking system located in front of the LHCb magnet,...
The energy dependency (running) of the strength of electromagnetic interactions $\alpha$ and of the mixing with weak interactions $\sin^2\theta_{\mathrm{W}}$ plays an important role in precision tests of the SM. The running of the former to the $Z$ pole is an input quantity for global electroweak fits, while the running of the mixing angle is susceptible to the effects of BSM physics,...
We present a reinterpretation study of existing results from the CMS Collaboration, specifically, searches for light BSM Higgs pairs produced in the chain decay $pp\to H_{\rm SM}\to hh(AA)$ into a variety of final states, in the context of the CP-conserving 2-Higgs Doublet Model (2HDM) Type-I. Through this, we test the LHC sensitivity to a possible new signature, $pp\to H_{SM}\to ZA\to ZZ h$,...
The Standard Model (SM) of particle physics is a very successful theory that can explain the fundamental particles and their interactions. However, there are theoretical, and experimental motivations of studying physics Beyond Standard Model. I will discuss the possibility of probing Beyond Standard Model physics through light particles like axions and light gauge bosons. We also obtain...
I will present our recent study of modeling uncertainties for fiducial signatures of the ttW process in the 3 lepton decay channel by comparing various approaches, such as full off-shell fixed-order NLO predictions and parton shower matched predictions based on on-shell ttW production. Finally, we provide a simple prescription to combine both approaches.
The exact computation of partition functions of four-dimensional theories with extended supersymmetry by means of localization techniques hinges on the existence of a Lagrangian description. On the one hand, it is known that in many cases such a description is only accurate in certain regions of moduli space, such as weak-coupling phases. On the other hand, there are also many examples of...
The ALICE Collaboration has just finished a major detector upgrade which increases the data-taking rate capability by two orders of magnitude and will allow to collect unprecedented data samples. For example, the analysis input for 1 month of Pb-Pb collisions amounts to about 5 PB. In order to enable analysis on such large data samples, the ALICE distributed infrastructure was revised and...
In Run 3 the LHCb experiment operates at an instantaneous luminosity a factor five higher compared to the previous runs, with sensitive parts of the upgraded detector as close as 5 mm to the beam. Hence, radiation and background levels should be carefully monitored to protect the experiment from effects ranging from poor data quality to instantaneous damage. To this end, LHCb is equipped with...
The muon anomaly, $a_\mu=(g_{\mu}-2)/2$, is a low-energy observable which can be both measured and computed to high precision, making it a sensitive test of the Standard Model and a probe for new physics. The current discrepancy between the Standard Model calculation from the Muon $g-2$ Theory Initiative [T. Aoyama et al. - Phys. Rept. 887 (2020), 1-166] and the experimental value is...
The latest results of searches for supersymmetry in hadronic and photonic final states with the CMS experiment will be presented. The analyses are based on the full dataset of proton-proton collisions collected during the Run 2 of the LHC at a center-of-mass energy of 13 TeV.
The ICARUS collaboration employed the 760-ton T600 detector in a successful three-year physics run at the underground LNGS laboratories studying neutrino oscillations with the CNGS neutrino beam from CERN, and searching for atmospheric neutrino interactions. ICARUS performed a sensitive search for LSND-like anomalous νe appearance in the CNGS beam, which contributed to the constraints on the...
The International Particle Physics Outreach Group (IPPOG) is a network of scientists, science educators and communication specialists working across the globe in informal science education and public engagement. The primary methodology adopted by IPPOG employs the direct involvement of scientists active in current research with education and communication specialists, in order to effectively...
The Circular Electron Positron Collider (CEPC) has been proposed as a Higgs/Z factory in China. The baseline design of a detector concept consists of a tracking system, which is a high precision (about 100 $\mu$m) large volume Time Projection Chamber as the main track device. The tracking system has high precision performance requirements, but without power-pulsing, which leads to additional...
In this talk we will talk about a large class of solvable lattice models, based on the data of conformal field theory. These models are constructed from any conformal field theory. The talk will be based on the results of a work titled “The crossing multiplier for solvable lattice models”. We consider the lattice models based on affine algebras described by Jimbo et al., for the affine...
The sPHENIX detector is a next generation experiment being constructed at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. Starting next year it will collect high statistics data sets from ultra relativistic Au+Au, p+p and p+Au collisions. The readout is a combination of triggered readout for calorimeters and streaming readout for the silicon pixel/strip detectors...
The large integrated luminosity accumulated by the ATLAS detector at the highest proton-proton collision energy provided by LHC allows the study of rare SM top quark production processes. The observation of associated production of top quarks has provided the first direct measurement of the top quark EW couplings with neutral gauge bosons and the first access to the four-top-quark interaction...
In this talk, I will present several possible anomaly-free implementations of the Branco-Grimus-Lavoura (BGL) model with two Higgs doublets and one singlet scalar. The model also includes three generations of massive neutrinos that get their mass via a type-I seesaw mechanism. A particular anomaly-free realization, which we dub νBGL-1 scenario, is subjected to a complete analysis, where valid...
The goal of the Short Baseline Neutrino (SBN) experiment at Fermilab is to confirm, or definitely rule out, the existence of sterile neutrinos at the eV$^2$ mass scale. SBN searches both for $\nu_e$ appearance and $\nu_\mu$ disappearance signals from the oscillation $\nu_\mu \rightarrow \nu_e$ in the Booster Neutrino Beamline. For this purpose neutrino interactions will be observed by two...
Since 1984 the Italian groups of the Istituto Nazionale di Fisica Nucleare (INFN) and Italian Universities, collaborating with the DOE laboratory of Fermilab (US) have been running a two-month summer training program for Italian university students. While in the first year the program involved only four physics students of the University of Pisa, in the following years it was extended to...
A large, worldwide community of physicists is working to realise an exceptional physics program of energy-frontier, electron-positron collisions with the International Linear Collider (ILC). The International Large Detector (ILD) is one of the proposed detector concepts at the ILC. The ILD tracking system consists of a Si vertex detector, forward tracking disks and a large volume Time...
Among the simplest new physics explanations of the muon g-2 anomaly are scenarios with chirally enhanced contributions. The new particles can be very heavy, even beyond the reach of future colliders, and thus the confirmation of such explanations might rely only on indirect evidence. I will discuss that these models generically predict correlations with related signatures that include possible...
Many physics analyses using the Compact Muon Solenoid (CMS) detector at the LHC require accurate, high resolution electron and photon energy measurements. Excellent energy resolution is crucial for studies of Higgs boson decays with electromagnetic particles in the final state, as well as searches for very high mass resonances decaying to energetic photons or electrons. The CMS electromagnetic...
Flavor violating axion couplings can be in action before recombination, and they can fill the early universe with an additional radiation component. Working within a model-independent framework, we consider an effective field theory for the axion field and quantify axion production. Current cosmological data exclude already a fraction of the available parameter space, and the bounds will...
Mexico has participated in CMS masterclasses since 2014 . These masterclasses have grown since then, albeit with some interruption due to the recent pandemic. The authors discuss the experience of CMS masterclasses in Mexico, the practices that enabled them to thrive, and the U.S. - Mexico collaboration that has aided their success. They also examine how students and teachers have benefited...
With the discovery of the Higgs boson at the CERN Large Hadron Collider (LHC), the particle spectrum of the Standard Model (SM) is complete. The next target at the energy frontier will be to study the Higgs properties and to search for the next scale beyond the SM. Experimentally, the $H\to c \bar{c}$ channel would be extremely difficult to dig out because of both the weak Yukawa coupling and...
STEREO is a segmented, Gd-loaded liquid scintillator calorimeter that studied anti-neutrinos produced by the compact, highly $^{235}$U-enriched reactor core of the Institut Laue-Langevin in Grenoble (France). The experiment ran from 2016 to 2020 and was designed to test the light sterile neutrino explanation of the Reactor Antineutrino Anomaly (RAA) by comparing the neutrino energy spectra...
If we start from some functional relations as definition of a quantum integrable theory, then we can derive from them a linear integral equation. It can be extended, by introducing dynamical variables, to become an equation with the form of the Marchenko one. Then, we naturally derive from the latter a classical Lax pair problem. We exemplify our method by focusing on the massive version of...
The direct pair-production of the tau-lepton superpartner, stau, is one of the most interesting channels to search for SUSY. First of all the stau is with high probability the lightest of the scalar leptons. Secondly the signature of stau pair production signal events is one of the most difficult ones, yielding to the 'worst' and so most global scenario for the searches. The current...
A comprehensive set of measurements of top quark production in association with vector bosons (W, Z, gamma) using data collected by the CMS experiment is presented. Differential cross sections are measured as functions of several kinematic observables from the final state physics objects and compared to standard model predictions.
The $\mu$-RWELL is a single amplification stage resistive MPGD. The amplification stage is realized with a copper-clad polyimide foil patterned with a micro-well matrix coupled with the readout PCB through a DLC resistive film (10÷100 M$\Omega$/square).
The detector is proposed for several applications in HEP that require fast and efficient triggering in harsh environment (LHCb muon-upgrade),...
The recent measurement of the muon g-2 at Fermilab confirms the previous Brookhaven result. The leading hadronic vacuum polarization (HVP) contribution to the muon g-2 represents a crucial ingredient to establish if the Standard Model prediction differs from the experimental value. A recent lattice QCD result by the BMW collaboration shows a tension with the low-energy e+e−→hadrons data which...
The Compact Muon Solenoid (CMS) detector is one of the two multi-purpose experiments at the Large Hadron Collider (LHC) and has a broad physics program. Many aspects of this program depend on our ability to trigger, reconstruction and identify events with final state electrons, positrons, and photons with the CMS detector with excellent efficiency and high resolution.
In this talk we...
Proton and neutron electric and magnetic form factors are the primary characteristics of their spatial structure and have been studied extensively over the past half-century. One of the recent focal points is their behavior at large values of the momentum transfer $Q^2$, where one expects to observe transition from nonperturbative to perturbative QCD dynamics and detect effects of quark...
The International Axion Observatory (IAXO) is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs) produced in the Sun. It is conceived to reach a sensitivity on the axion photon coupling in the range of 10$^{-12}$ GeV$^{-1}$.
On the way to IAXO, an intermediate experiment babyIAXO is already in the construction phase. BabyIAXO will be important to test...
While colour-kinematics duality and double copy are a well established paradigm at tree level, their loop level generalisation remained for a long time an unsolved problem. Lifting the on-shell, scattering amplitude-based description to an action-based approach, we show that a theory that exhibits tree level colour-kinematics duality can be reformulated in a way such that its loop integrands...
In the quest for new physics (NP), due to the lack of any direct evidence, the framework of Effective field theory (EFT) becomes an indirect and consistent way to parametrise NP effects in terms of higher dimension operators. Among the observables with the potential to account for NP signatures, Electroweak Precision Observables (EWPO) and those from Higgs productions and decays play an...
The SoLid experiment is currently taking physics data close to the BR2 reactor core (SCK·CEN, Belgium), exploring very short baseline anti-neutrino oscillations. It aims to provide a unique and complementary test of the reactor anti-neutrino anomaly by measuring both anti-neutrino rate and energy spectrum.
The 1.6 tons detector uses an innovative antineutrino detection technique based on a...
In view of the construction of a circular e+e- collider, like FCC_ee, the scientific community of RD_FCC is conceiving the IDEA apparatus: the Innovative Detector for Electron-positron Accelerator.
The detector is composed, from the innermost region going outward, of a central tracker, the magnet, the pre-shower, the calorimeter and the muon system.
The micro-Resistive WELL technology has...
KLOE and KLOE-2 data (almost 8 fb$^{-1}$) constitute a unique sample, rich in physics, and the largest dataset ever collected at an electron-positron collider operating at the $\phi$ peak resonance.
In total it corresponds to the production of about 24 billion $\phi$ mesons, whose decays include about 8 billion pairs of neutral K mesons and about 300 million $\eta$ mesons.
A wide hadron...
Axion, a hypothetical particle originally emerging from a proposed solution to the strong CP problem of particle physics, is one of the most favored candidates addressing the dark matter puzzle. As part of the efforts within the Center for Axion and Precision Physics Research (CAPP) of the Institute for Basic Science (IBS), we are searching for axion dark matter using the haloscope method...
Since its discovery at the Large Hadron Collider in 2012 the Higgs boson has arguably become the most famous of the Standard Model particles and many measurements have been performed in order to asses its properties. Among others, these include measurements of the Higgs boson's ${\cal CP}$-state which is predicted to be ${\cal CP}$-even. Even though a pure ${\cal CP}$-odd state has been ruled...
The ability to identify jets containing b-hadrons (b-jets) is of essential importance for the scientific program of the ATLAS experiment. Cutting-edge machine learning techniques underpin the design of the algorithms used to identify b-jets. Their performance is measured thoroughly in data, for each jet flavour, and used to correct the simulation. The scope of the algorithm and calibration is...
In this presentation, I discuss collider signatures with a focus on new physics scenarios that are predicted in various classes of multi-Higgs doublet models. A thorough analysis of one of these signatures is conducted in the context of the Large Hadron collider, based on a topology with two charged leptons and 4 jets arising from first/second generation chiral quarks. I discuss how the...
Liquid Argon time projection chamber or LArTPC is a scalable, tracking calorimeter that features rich event topology information. It provides the core detector technology for many current and next-gen large scale neutrino experiments, e.g., DUNE and the SBN program. For neutrino experiments, LArTPC faces many challenges in both hardware and software to achieve its optimum performance. On the...
In this talk, I will show a new connection between quantum integrable models and black holes perturbation theory. After an introduction to quasinormal modes and their role in gravitational waves observations, I will connect their mathematically precise definition with the integrability structures derived from the ordinary differential equation associated to the black hole perturbation. More...
The LHCb experiment has undergone a comprehensive upgrade in preparation for data taking in 2022 and beyond. The offline computing model has been completely redesigned in order to process the much higher data volumes originating from the detector and the associated demands of simulated samples of ever-increasing size. This contribution presents the evolution of the data processing model with a...
INFN Kids is a national outreach initiative carried out within the INFN's third mission activities. It is dedicated to children of primary and middle schools ages in both formal and informal contexts. It aims at creating engagement and at stimulating curiosity about physics in young children not only in schools, with the support and the mediation of their teachers, but also in everyday life....
The latest results from combinations of multiple searches targeting the electroweak production of supersymmetric particles and top squarks will be presented. The analyses are based on the full dataset of proton-proton collisions collected during the Run 2 of the LHC at a center-of-mass energy of 13 TeV.
The future of HEP experiments foresee new upgrades of the current accelerators (HL-LHC) and the design of high energy and very high intensity new particle accelerators (FCC-ee/hh, EIC, Muon Collider). This opens new challenges to develop cost effective, high efficiency particle detectors operating in high background and high radiation environment.
An R&D project is ongoing in order to...
The multiple-cell cavity design, developed at IBS-CAPP, was successfully demonstrated, by conducting an axion experiment using a double-cell cavity, as an efficient approach for high-mass axion searches. Using cavities with higher cell-multiplicities, we are currently running parallel experiments for axion searches near 6 GHz and 7 GHz with KSVZ sensitivity relying on dilution refrigerators...
We reconsider kinetically mixed dark photons as an explanation of the $(g-2)_\mu$ anomaly. While fully visible and invisible dark photon decays are excluded, a semi-visible solution can still explain the discrepancy. We explicitly re-evaluate the constraints from B-factories and fixed-target experiments, namely BaBar and NA64, pointing to a solution in terms of dark sector models with dark...
The CMS-HF calorimeter uses quartz fibers as active elements to measure the energy of the particles. Since the CMS-HF detector is in a high radiation area, radiation effects decrease the performance of the detector by gradually damaging the active elements. As a consequence, losing transparency in the fibers causes gradual change in the calibration of the detector. Hence, the change in the...
The ATLAS Collaboration has developed a variety of printables for education and outreach activities. We present two ATLAS Colouring Books, the ATLAS Fact Sheets, the ATLAS Physics Cheat Sheets, and ATLAS Activity Sheets. These materials are intended to cover key topics of the work done by the ATLAS Collaboration and the physics behind the experiment for a broad audience of all ages and levels...
Hard Exclusive Meson Production and Deeply Virtual Compton Scattering (DVCS) are widely used reactions to study Generalised Parton Distributions (GPDs). Investigation of GPDs represents one of the main goals of the COMPASS-II program. Measurements of the exclusive processes were performed at COMPASS in 2016 and 2017 at the M2 beamline of the CERN SPS using the 160 GeV/$c$ muon beam scattering...
One of the greatest achievements of the LHC has been the discovery of the Higgs boson in 2012. Since then, the properties of this newly discovered particle have been widely tested. For instance, we need to understand how this particle couples to the other fundamental particles. The coupling of the Higgs boson to the heaviest of the quarks, the top quark, has been probed first indirectly and,...
Cerenkov Differential counters with Achromatic Ring focus (CEDARs) in the COMPASS experiment beamline were designed to identify particles in limited intensity beams with divergence below 65μrad. However, in the 2018 data taking, a beam with a 15 times higher intensity and a beam divergence of up to 300μrad was used, hence the standard data analysis method could not be used. A machine learning...
A long-term irradiation and longevity test was conducted on two bulk-Micromegas detectors with screen-printed resistive strips, working with Ar:CO$_2$ gas mixture at the CERN GIF++ facility between 2015 and 2018.
The results have been presented at previous conferences and are under publications. In that test the detectors have integrated a total charge of about 0.3 C/cm$^2$.
One of the...
The BREAD Collaboration proposes an ambitious program of broadband searches for terahertz axion dark matter. Its experimental hallmark is a cylindrical metal barrel converting axions to photons that are focused by a parabolic reflector to an ultralow noise photosensor. Practically, this novel dish antenna geometry enables enclosure inside standard cryostats and high-field magnets. We present...
The renormalization group (RG) beta function describes the running of the renormalized coupling and connects the ultraviolet and infrared regimes of quantum field theories. Performing numerical lattice field theory simulations we use gradient flow measurements to determine the RG $\beta$ function nonperturbatively for SU(3) gauge systems with $N_f$ = 2, 4 and 6 flavors in the fundamental...
In the canonical seesaw framework flavor mixing and CP violation in weak charged-current interactions of {\it light} and {\it heavy} Majorana neutrinos are correlated with each other and described respectively by the $3\times 3$ matrices $U$ and $R$. We show that the very possibility of $\big|U^{}_{\mu i}\big| = \big|U^{}_{\tau i}\big|$ (for $i = 1, 2, 3$), which is strongly indicated by...
In the last two years various existing public outreach activities in ALICE have been adapted for use in an online format, this includes e.g. the well established particle physics masterclasses but also virtual visits to ALICE. In this context an online workshop took place in 2021 with the goal to design a LEGO model of the ALICE detector in minifigure scale (ca. 1:40) and to motivate young...
In this talk we show our results for the soft-gluon threshold resummation of the four-top production process. This is the first time threshold resummation is applied to a 2$\rightarrow$4 type hadronic process. By matching the next-to-leading logarithmic (NLL) result to the available next-to-leading order (NLO) result, we achieve NLO+NLL’ precision for the total cross section, where we take...
AMBER is a newly proposed fixed-target experiment at the M2 beam line of the SPS, devoted to various fundamental QCD measurements, with a Proposal recently approved by the CERN Research Board for a Phase-1 program and a Letter of Intent made public for a longer term program.
Such an unrivaled installation would make the experimental hall EHN2 the site for a great variety of measurements to...
SUSY is still a viable solution to the muon $g$−2 anomaly. Focusing on its minimal version (MSSM), I provide an overview of its current status, including constraints from the LHC Run 2, expected limits from future experiments, and connections to the relic density of the lightest SUSY particle as the dark matter.
I will cover all the four possible "simplified mass spectra" for the $g$−2...
The ATLAS Tile Calorimeter (TileCal) is the central section of the hadronic calorimeter of the ATLAS experiment. It provides essential information for reconstructing hadrons, jets, hadronic decays of tau leptons and missing transverse energy. This sampling calorimeter uses steel plates as an absorber and scintillating tiles as the active medium. The light produced by the tiles is transmitted...
A special readout chain was developed for the data acquisition of an innovative cylindrical gas-electron multiplier (CGEM) [1], which is being built to replace the inner drift chamber of the BESIII [2] experiment.
The whole system [3] was designed with modularity, versatility and scalability in mind and can be used to test other innovative micro-pattern gaseous detectors.
Signals from...
In the past few years, using Machine and Deep Learning techniques has become more and more viable, thanks to the availability of tools which allow people without specific knowledge in the realm of data science and complex networks to build AIs for a variety of research fields. This process has encouraged the adoption of such techniques: in the context of High Energy Physics, new algorithms...
The Mu2e experiment at Fermi National Accelerator Laboratory will search for charged-lepton flavour violating neutrino-less conversion of negative muons into electrons in the coulomb field of an Al nucleus. The conversion electron has a monoenergetic 104.967 MeV signature slightly below the muon mass and will be identified by a complementary measurement carried out by a high-resolution tracker...
We review recent CMS results on hard probes of heavy ion collisions, including jet and electroweak boson production.
How are we doing? Learning from others - demographics and practice sharing
The excess of gamma rays in the data measured by the Fermi Large Area Telescope from the Galactic center region is one of the most intriguing mysteries in Astroparticle Physics. This Galactic center excess (GCE), has been measured with respect to different interstellar emission models, source catalogs, data selections and techniques. Although several proposed interpretations have appeared in...
The FCC-ee offers powerful opportunities to determine the Higgs boson parameters, exploiting over $10^{6}$ e+e- → ZH events and almost $10^{5}$ WW→H events at centre-of-mass energies around 240 and 365 GeV. This contribution spotlights the important measurements of the ZH production cross section and of the Higgs boson mass. The measurement of the total ZH cross section is an essential input...
Precision luminosity measurements are an essential ingredient to cross section measurements at the LHC, needed to determine fundamental parameters of the standard model and to constrain or discover beyond-the-standard-model phenomena. The luminosity measurement of the CMS detector at the LHC, using proton-proton collisions at 13 TeV during the 2015-2018 data-taking period (“Run 2”), is...
The long-standing mismatch between the measured muon magnetic moment and its Standard Model (SM) prediction (the so called (g-2)$_{\mu}$ anomaly) remains one of the most pressing questions in particle physics. Recently, the Muon g-2 Collaboration at Fermilab reported its latest results on the muon magnetic moment measurement. The combination of this measurement with the previous Brookhaven...
We present a new approach to jet definition alternative to clustering methods, such as the anti-kT scheme, that exploit kinematic data directly. Instead the new method uses kinematic information to represent the particles in a multidimensional space, as in spectral clustering. After confirming its Infra-Red (IR) safety, we compare its performance in analysing $gg \rightarrow H_{125GeV}...
The Mu2e experiment at Fermilab will search for the Standard Model forbidden conversion, within the field of a nucleus, of a negative muon into an electron. A clean discovery signature is provided by the observation of mono-energetic conversion electrons with energy of 104.967 MeV. If the conversion is not observed, Mu2e can set a limit of the ratio between the conversion and the capture rate...
Jets are generated in hard interactions in high energy nuclear collisions, propagating through the quark-gluon plasma (QGP) as the jet shower evolves. The interaction of jet shower components with the QGP, known as jet quenching, generates several observable phenomena that provide incisive probes of the structure and dynamics of the QGP. In particular, measurements of the medium-induced...
Multiplicity is one of the simplest experimental observables in collider events, whose importance stretches from calibration to advanced tagging techniques. We introduce a new (sub)jet multiplicity, the Lund multiplicity, for lepton and hadron collisions. It probes the full multiple branching structure of QCD and is calculable in perturbation theory. We introduce a formalism allowing us to...
After LS3 the LHC will increase its instantaneous luminosity by a factor of 7, leading to the High Luminosity LHC (HL-LHC). At the HL-LHC, the number of proton-proton collisions in one bunch crossing (called pileup) will increase significantly, putting more stringent requirements on the LHC detectors' electronics and real-time data processing capabilities.
The ATLAS Liquid Argon (LAr)...
This talk presents the latest results of the reactor antineutrino flux and spectrum measurement at Daya Bay. The antineutrinos were generated by six nuclear reactors with 2.9 GW thermal power each and were detected by eight antineutrino detectors deployed in two near and one far underground experimental halls. Deviations in the measured flux and positron prompt energy spectrum were found...
Hadronic τ decays are studied as probe of new physics. We determine the dependence of several inclusive and exclusive τ observables on the Wilson coefficients of the low-energy effective theory describing charged-current interactions between light quarks and leptons. The analysis includes both strange and non-strange decay channels. The main result is the likelihood function for the Wilson...
In this talk, we will present NNLO QCD predictions for several differential distributions of B-hadrons in top-pair events at the LHC. In an extension of previous work, the decay of the produced B-hadron to a muon or a J/$\psi$ meson has been incorporated, allowing us to make predictions for distributions involving those decay products as well. Additionally, a new set of B-hadron fragmentation...
The high-luminosity upgrade of the LHC (HL-LHC) is foreseen to reach an instantaneous luminosity a factor of five to seven times the nominal LHC design value. The resulting, unprecedented requirements for background monitoring and luminosity measurement create the need for new high-precision instrumentation at CMS, using radiation-hard detector technologies. This contribution introduces the...
The detection of line-like TeV gamma-ray features configures as a smoking gun for the discovery of TeV-scale particle dark matter. We report the first search for dark matter spectral lines in the Galactic Centre region up to gamma-ray energies of 100 TeV with the MAGIC telescopes, located on the Canary island of La Palma (Spain). This region is expected to host the most easily detectable dark...
Dual-readout fibre-based calorimeters have been demonstrated to achieve a superior built-in energy resolution, that can be further enhanced by the application of post-processing reconstruction techniques (like particle flow, for example). A prototype built starting from capillary tubes as basic elements has been exposed to test beams with energies ranging from 1 to 100 GeV to measure the...
he ATLAS experiment plans to upgrade its Trigger DAQ system dedicated to HL-LHC. Due to the expected large amount of data, one of the key upgrades is how to filter the events in a short time. Part of the filtering is performed based on calorimeter and muon spectrometer information, and then further event filtering is done in the Event Filter (EF) system with data including ones from the inner...
Metastable pionic helium is a three-body exotic atom composed of a helium nucleus, electron, and negatively-charged pion occupying a highly-excited state with principal and orbital angular momentum quantum numbers of n≈l-1≈17 [1,2] with a 7 ns average lifetime. We recently used the 590 MeV ring cyclotron facility of PSI to synthesize pionic helium atoms in a helium target, and induced an...
Higgs production cross sections at LHeC (FCC-he) energies are as large (larger than) those at future $𝑍−𝐻$ $𝑒^+𝑒^−$ colliders. This provides alternative and complementary ways to obtain very precise measurements of the Higgs couplings, primarily from luminous, charged current DIS. Recent results for LHeC and FCC-he are shown and their combination is presented with $𝑝𝑝$ (HL-LHC) cross sections...
Discriminating quark and gluon jets is a long-standing topic in collider phenomenology. In this paper, we address this question using the Lund jet plane substructure technique introduced in recent years. We present two complementary approaches: one where the quark/gluon likelihood ratio is computed analytically, to single-logarithmic accuracy, in perturbative QCD, and one where the Lund...
We study the status of the reactor antineutrino anomaly in light of recent reactor flux models obtained with the conversion and summation methods. We present a new improved calculation of the IBD yields of the standard Huber-Mueller (HM) model and those of the new models. We show that the reactor rates and the fuel evolution data are consistent with the predictions of the Kurchatov Institute...
Studies of top quark properties using data collected by the CMS experiment are presented, including direct measurements of properties or extractions using differential cross section measurements. The latest results on top mass using multiple kinematic distributions in a likelihood technique as well as the top quark pole mass derived from tt+jet cross section will be discussed.
Semileptonic heavy-to-light $B$ decays are very intriguing transitions mainly because a long-standing tension affects the inclusive and the exclusive determinations of the CKM matrix element $\vert V_{ub} \vert$. Our goal is to re-examine the $b \to u$ quark transitions through the Dispersive Matrix (DM) approach. The DM method is based on the non-perturbative determination of the dispersive...
The energy loss of jets (jet quenching) is one of the most important signatures of the deconfined state of quarks and gluons (quark-gluon plasma) created in Pb-Pb collisions at the LHC. The measurement of jets recoiling from a trigger hadron uniquely enables the exploration of medium-induced modification of jet production. Jet deflection via multiple soft scatterings with the medium...
Established in 2019, the ALICE Diversity Office monitors issues of diversity, promotes initiatives regarding diversity and inclusion within the ALICE Collaboration, and serves as a direct liaison with the diversity offices at CERN and the other experiments at the LHC. In addition, the ALICE Diversity Office collects yearly statistics used to investigate the time evolution of membership trends...
A precise measurement of the luminosity is a crucial input for many ATLAS physics analyses, and represents the leading uncertainty for W, Z and top cross-section measurements. The final ATLAS luminosity determination for the Run-2 13 TeV dataset is described, based on van der Meer scans during dedicated running periods each year to set the absolute scale, which is then extrapolated to...
Precision measurements of cosmic ray positrons are presented up to 1.4 TeV based on 3.4 million positrons collected by the Alpha Magnetic Spectrometer on the International Space Station. The positron flux exhibits complex energy dependence. Its distinctive properties are: (a) a significant excess starting from 24.2 GeV compared to the lower-energy, power-law trend; (b) a sharp drop-off above...
Muon collisions at multi-TeV center of mass energies are ideal for studying Higgs boson properties. At these energies the production rates will allow precise measurements of its couplings to fermions and bosons. In addition the double Higgs boson production rate could be sufficiently high to directly measure the parameters of trilinear self-couplings, giving access to the determination of the...
The identification of the origin of hadronic jets is a key aspect in particle physics at hadron colliders. In this talk I will discuss the separation of hadronic jets that contain bottom quarks (b-jets) from jets featuring only light partons using a newly developed approach reported in arXiv:2202.05082 [hep-ph].
This approach exploits QCD-inspired jet substructure observables, such as...
Due to its high mass top quarks decay before top-flavoured hadrons can be formed. This feature yields experimental access to the top quark polarization and production asymmetries. The large top quark sample moreover enables measurements of other properties, such as the W-boson branching ratios and helicity, and fragmentation functions of the bottom quarks. In this contribution, recent...
The Deep Underground Neutrino Experiment (DUNE) is an international project aiming at neutrino physics and astrophysics and a search for phenomena predicted by theories beyond the standard model. The excellent imaging capability of Liquid Argon Time Projection Chamber (LArTPC) technology, particle tracking and identification utilized in the Far Detector allow the experiment to achieve high...
The aim of the LHCb Upgrade II is to operate at a luminosity of 1.5 x 10^34 cm^-2 s^-1 to collect a data set of 300 fb^-1. This will require a substantial modification of the current LHCb ECAL due to high radiation doses in the central region and increased particle densities. A consolidation of the ECAL already during LS3 would reduce the occupancy in the central region and mitigate...
We propose a signal-agnostic strategy to reject QCD jets and identify anomalous signatures in a High Level Trigger (HLT) system at the LHC. Soft unclustered energy patterns (SUEP) could be such a signal — predicted in models with strongly-coupled hidden valleys — primarily characterized by a nearly spherically-symmetric signature of an anomalously large number of soft charged particles, in...
We report high-statistics measurements of semi-inclusive distributions of charged jets recoiling from high-$E_{\text{T}}$ direct photon ($\gamma_{\text{dir}}$) and $\pi^{0}$ triggers in $p$+$p$ and central Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. In a semi-inclusive approach, event bias is induced solely by the choice of trigger; separately utilizing $\gamma_{\text{dir}}$ and $\pi^{0}$...
Though the Belle experiment has stopped data taking more than a decade ago, new results on semileptonic B meson decays are still being obtained. This is in part due to new experimental tools elaborated for Belle II applied to the Belle data set, such as the FEI (Full Event Interpretation) hadronic and semileptonic tag which enables new, more precise measurements of $B \to D^{*}\ell\nu$ and $B...
Future electron-positron colliders, or Higgs factories, impose stringent requirements on the energy resolutions of hadron and jets for the precision physic programs of the Higgs, Z, W bosons and the top quark. Based on the particle-flow paradigm, a novel highly granular crystal electromagnetic calorimeter (ECAL) has been proposed to address major challenges from the jet reconstruction and to...
This submission describes revised plans for Event Filter Tracking in the upgrade of the ATLAS
Trigger and Data Acquisition system for the high pileup environment of the High-Luminosity
Large Hadron Collider (HL-LHC). The new Event Filter Tracking system is a flexible,
heterogeneous commercial system consisting of CPU cores and possibly accelerators (e.g.,
FPGAs or GPUs) to perform the...
The 2020 Update for the European Strategy for Particle Physics explicitly highlights the need for programs at the so-called intensity frontier which exploit the unique potential of European laboratories. The European Spallation Source (ESS), presently under construction, in Lund, Sweden, is a multi-disciplinary international laboratory that will operate the world's most powerful pulsed neutron...
The ATLAS physics program at High Luminosity LHC (HL-LHC) calls for a precision in the luminosity measurement of 1%. A larger uncertainty would represent the dominant systematic error in precision measurements, including the Higgs sector. To fulfill such requirement in an environment characterized by up to 140 simultaneous interactions per crossing (200 in the ultimate scenario), ATLAS will...
Monte Carlo event generators, including their core parton-shower component, are crucial for a wide range of physics applications at colliders. However, the current “leading logarithmic” (LL) accuracy of parton showers is increasingly becoming a limiting factor in precision applications. This talk presents new “PanScales” dipole showers for hadron collisions, focusing on the physical...
We explore the sensitivity of directly testing the muon-Higgs coupling at a high-energy muon collider. This is strongly motivated if there exists new physics that is not aligned with the Standard Model Yukawa interactions which are responsible for the fermion mass generation. We illustrate a few such examples for physics beyond the Standard Model. With the accidentally small value of the muon...
The LHC has unlocked a previously unexplored energy regime. Dedicated techniques have been developed to reconstruct and identify boosted top quarks. Measurements in boosted top quark production test the Standard Model in a region with a strongly enhanced sensitivity to high-scale new phenomena. In this contribution, several new measurements of the ATLAS experiment are presented of the...
JUNO (Jiangmen Underground Neutrino Observatory) is a large liquid scintillator detector currently under construction in the underground laboratory of Kaiping (Guangdong, China) and expected to be completed in 2023.
The JUNO central detector will contain a 35.4 m diameter acrylic vessel filled with 20-kt of LAB-based scintillator, and submerged in a water pool equipped with PMTs to act as...
Semileptonic b-hadron decays to a final state with a heavy lepton are sensitive to new couplings, such as those generated by charged Higgses or Leptoquarks. The B-Factories and LHCb have performed measurements of these decays, using different approaches and techniques. A global average of measurements of ratios of branching fractions to final states with taus or light leptons shows a...
We compute the in-medium jet broadening to leading order in energy in the opacity expansion. At leading order in $\alpha_s$ the elastic energy loss gives a jet broadening that grows with $\ln E$. The next-to-leading order in $\alpha_s$ result is a jet narrowing, due to destructive LPM interference effects, that grows with $\ln^2 E$. We find that in the opacity expansion the jet broadening...
LHCb is a collaboration of about 1500 members from 87 institutions based in 19 countries, and representing many more nationalities. We aim to work together on experimental high energy physics, and to do so in the best and most collaborative conditions. The Early Career, Gender & Diversity (ECGD) office exists to support this goal, and in particular has a mandate to work towards gender...
A parton shower model is presented that is explainable and physics aware, and trainable solely based on the energy-momentum vectors of final state particles [1]. We show that it is possible to use such a white box AI approach to train a generative–adversarial network (GAN) from a DGLAP-based parton shower Monte Carlo, where the inferred mechanisms can be fully understood by a human physicist....
In this talk, the program of the Reactor Neutrino Experiments of Turkey (RNET) will be presented.
This program includes a small portable Water-based Liquid Scintillator Detector (WbLS) to detect neutrinos from the Akkuyu nuclear power plant, planned begin operating in 2023. The small near-field detector will weigh about 2-3 tons and will be placed less than 100 meters from the reactor cores....
Search for possible violation of combined charge, parity, and time-reversal symmetries is yet another approach for a test of New Physics, therefore a bound state of electron and positron (positronium) as the lightest matter-antimatter system and at the same time aneigenstate of the C and P operators is an unique probe in such endeavour. The test is performed by measurement of angular...
The Crilin (CRystal calorImeter with Longitudinal INformation) calorimeter is a semi- homogeneous calorimeter based on Lead Fluoride (PbF$_2$) Crystals readout by surface-mount UV-extended Silicon Photomultipliers (SiPMs). It is a proposed solution for the electromagnetic calorimeter of the Muon Collider. In a Muon Collider, the timing could be used to remove signals produced by beam-induced...
The High-Luminosity LHC (HL-LHC) will usher a new era in high-energy physics. The HL-LHC experimental conditions entail an instantaneous luminosity of up to 75 Hz/nb and up to 200 simultaneous collisions per bunch crossing (pileup). To cope with those conditions, the CMS detector will undergo a series of improvements, in what is known as the Phase-2 upgrade. In particular, the upgrade of the...
The LHCb detector optimised its performance in Run 1 and 2 by stabilising the instantaneous luminosity during a fill. This is achieved by tuning the distance between the two colliding beams according to the measurement of instantaneous luminosity from hardware-based trigger counters. The upgraded LHCb detector operates at fivefold instantaneous luminosity compared to the previous runs, and it...
Extraterrestrial neutrinos can be used as messengers to probe the presence of dark matter particles in our Galaxy. Indeed, sizable fluxes of high-energy neutrinos are expected from pair annihilation and decay of dark matter in regions where it accumulates to a high density. Massive celestial bodies such as the Sun and the very large reservoir at the centre of the Milky Way were inside the...
We present an application of the unitarity-based dispersion matrix (DM) approach of Ref. [1] to the extraction of the CKM matrix element $|V_{cb}|$ from the experimental data on the exclusive semileptonic $B_{(s)} \to D_{(s)}^{(*)} \ell \nu_\ell$ decays [2-4]. The DM method allows to achieve a non-perturbative, model-independent determination of the momentum dependence of the semileptonic form...
Azimuthal angle ($\Delta\phi$) and transverse momentum ($p_\mathrm{T}$) correlations of isolated photons and associated jets, which are sensitive to medium induced parton momentum broadening, are reported for the first time with the latest high statistics pp and PbPb data recorded with the CMS detector at $\sqrt{s_{_{\mathrm{NN}}}} =$ 5.02 TeV. The fully corrected photon+jet azimuthal...
It is well known that the lattice structure of a scintillating crystal can influence the development of the electromagnetic processes inside it. For electron and photon beams aligned with the symmetry axis of a crystal, if the strong field condition is satisfied, a reduction of the radiation length X$_0$ is expected. However, these effects have been experimentally observed only in the last few...
Tests of Lorentz invariance continue to inform and challenge our modern understanding of spacetime symmetries. Using a model-independent framework based on effective field theory, generic perturbations from exact Lorentz invariance, CPT invariance, and other fundamental symmetries can be studied in a wide class of physical systems. Despite the large number of constraints extracted over the...
Higher-order splitting kernels comprise an essential ingredient for enhancing the logarithmic accuracy of parton showers. Beyond NLL, collinear dynamics of quark and gluon splitting at NLO is encoded in the triple-collinear splitting functions. This talk provides latest insights into various ingredients that enter the construction of higher-order parton showers. First, I will show that...
With technically mature design and well understood physics program, ILC is realistic option for realization of a Higgs factory. With a unique physics reach of a linear collider, ILC meaningfully complement projections for HL-LHC. Energy staged data collection, employment of beam polarization and capability to reach a TeV center-of-mass energy enable unique precision to probe BSM models above...
Effective field theories of QCD, such as soft collinear effective theory with Glauber gluons, have led to important advances in understanding of many-body nuclear effects. We provide first applications to QED processes. We study the exchange of photons between charged particles and the nuclear medium for (anti)neutrino-, electron-, and muon-induced reactions inside a large nucleus. We provide...
Quantum information observables, such as entanglement measures, provide a powerful way to characterize the properties of quantum states. In this talk, I propose to use them to probe the structure of fundamental interactions and to search for new physics at high energy.
Inspired by recent proposals to measure entanglement of top quark pairs produced at the LHC, I examine how...
We developed a novel free-running data acquisition system for the AMBER experiment. The system is based on a hybrid architecture containing scalable FPGA cards for data collection and conventional distributed computing. The current implementation is capable to collect up to 10 GB/s sustained data rate. The data reduction is performed by the filtration farm that decreases the incoming data rate...
INFN (Istituto Nazionale di Fisica Nucleare) is the Italian research agency dedicated to the study of the fundamental constituents of matter and the laws that govern them. INFN employs 2000 staff (scientists, technicians and people in administration) and about 4000 associate people.
In the last 20 years, the gender parity has been monitored and affirmative actions have been proposed. The...
Neutrino detectors, such as the IceCube telescope, can be used to perform indirect dark matter searches. Under the assumption that dark matter is made of Weakly Interacting Massive Particles (WIMPs), Standard Model particles are expected to be created by its annihilation or decay. These Standard Model particles could in turn produce neutrinos detectable by the IceCube neutrino telescope. As...
Cross section measurements in hadronic collisions are crucial to the physics program of ALICE. These measurements require a precise knowledge of the luminosity delivered by the LHC. Luminosity determination in ALICE is based on visible cross sections measured in dedicated calibration sessions, the van der Meer (vdM) scans.
This contribution presents a review of the ALICE luminosity...
With the KATRIN experiment, the determination of the absolute neutrino mass scale down to cosmologically favored values has come into reach. We show that this measurement provides the missing link between the Standard Model and the dark sector in scotogenic models, where the suppression of the neutrino masses is economically explained by their only indirect coupling to the Higgs field. We...
In this talk we discuss the results of a full-simulation study exploring CP violation in Higgs production through ZZ fusion. The study is performed for CLIC running at a centre-of-mass energy of 1.4TeV, assuming that the Higgs boson is realized as a mixture of scalar and pseudoscalar states. By measuring the electron and positron in the final state, the CP-violating mixing angle...
Being motivated mainly by the LHC physics, the currently used Monte Carlo Event Generators (MCEGs) lack of the quark spin degree of freedom in their hadronization models. In the recent years, however, the importance of quark spin related effects in hadronization such as the Collins effect has been brought to light by a vivid theoretical and experimental activity. Remarkably, global analyses of...
The next generation of collider detectors will make full use of Particle Flow Algorithms, requiring high precision tracking and full imaging calorimeters. The latter, thanks to granularity improvements by two to three orders of magnitude compared to existing devices, have been developed during the past 15 years by the CALICE collaboration and are now reaching maturity. The state-of-the-art and...
The CMS collaboration, one of the largest collaborations in high-energy physics, formed a Diversity Office (DO) under a mandate from its collaboration board in 2017. We present here the efforts of the CMS DO in fulfilling its mandate to improve diversity and inclusion (D&I) within the CMS Collaboration and foster an environment where all CMS members can thrive. These efforts include...
We review recent CMS results on collective flow in heavy ion collisions.
The Drell-Yan process offers an interesting opportunity to test the Standard Model (SM) and possibly reveal New Physics beyond it.
Indeed, dilepton production at high invariant masses is sensitive to beyond SM effects, while also being extremely well controlled both theoretically and experimentally and producing sufficient events for in-depth analyses.
In this talk I will present the recent...
We develop a modified power-counting within the heavy quark effective theory (HQET),
that results in a highly constrained set of second-order power corrections in the heavy quark expansion, compared to the standard approach. We implement this modified expansion to determine all $\bar{B} \to D^{(*)}$ form factors, both within and beyond the Standard Model, to $\mathcal{O}(\alpha_s,...
I will report on the developments in precision calculations for Higgs physics from its discovery to today, focusing on the latest advancements in the study of its main production channel, gluon fusion.
The physics reach of the LHCb detector can be extended by reconstructing particles with a long lifetime that decay downstream of the dipole magnet, using only hits in the furthest tracker from the interaction point. This allows for electromagnetic dipole moment measurements, and increases the reach of beyond the Standard Model long-lived particle searches. However, using tracks to reconstruct...
Several recent advancements in ROOT's analysis interfaces enable the development
of high-performance, highly parallel analyses in C++ and Python -- without requiring expert knowledge of multi-thread parallelization or ROOT I/O.
ROOT's RDataFrame is a modern interface for data processing that provides a natural entry point to many of these advancements. Power users can extend existing...
Neutrino nucleus elastic scattering ($\nu A_{el}$) is an electroweak interaction of the Standard Model of particle physics. We formulate a quantitative and universal parametrization of the quantum mechanical coherency effects in $\nu A_{el}$ [1], under which the experimentally accessible misalignment phase angle between nonidentical nucleonic scattering centers can be studied. We relate it to...
The CONUS experiment (COherent elastic NeUtrino nucleus Scattering) aims to detect coherent elastic neutrino-nucleus scattering (CEνNS) of reactor antineutrinos on germanium nuclei in the fully coherent regime. The CONUS experiment – operational since April 2018 – is located at a distance of 17m from the 3.9 GWth core of the Brokdorf nuclear power plant (Germany). The possible CEvNS signature...
Prototypes of electromagnetic and hadronic imaging calorimeters developed and operated by the CALICE collaboration provide an unprecedented wealth of highly granular data of hadronic showers for a variety of active sensor elements and different absorber materials. We will discuss detailed measurements of the spatial and the time structure of hadronic showers to characterize the different...
Many new physics models predict the existence of new particles decaying into scalar or vector bosons making these important signatures in the search for new physics. Searches for such resonances have been performed in final states with different numbers of leptons. This talk summarises ATLAS searches for diboson resonances with LHC Run 2 data in fully- and semi-leptonic final states.
Other comments
Deep neural networks are rapidly gaining popularity in physics research. While python-based deep learning frameworks for training models in GPU environments develop and mature, a good solution that allows easy integration of inference of trained models into conventional C++ and CPU-based scientific computing workflow seems lacking.
We report the latest development in ROOT/TMVA that aims to...
Measurements of Jet energy scale (JES) and resolution (JER) are presented, based on the legacy reconstruction of 13 TeV proton-proton collision data collected by CMS in 2016-2018.
Precision measurement of JES is of the utmost importance for the vast majority of physics measurements and searches at CMS. The high number of additional proton-proton interactions (event pileup), a harsh...
Space: the final frontier for antinuclei physics. There, antinucleosynthesis models already tested on the bench of hadronic colliders and particle physics experiments are put at work to crack one of the biggest problems of modern physics: the existence and nature of dark matter.
In fact, the observation of an antinucleus in cosmic rays would most probably mean a breakthrough in searches for...
The highly granular imaging calorimeters developed and operated by the CALICE collaboration provide a fertile testing ground for the application of innovative simulation and reconstruction techniques. Firstly, we show how granularity and the application of multivariate analysis algorithms enable the separation of close-by particles, and ParticleID. Secondly, we will outline how Machine...
Coherent elastic neutrino nucleus scattering (CEvNS) is a well-predicted Standard Model process only recently observed for the first time. Its precise study could reveal non-standard neutrino properties and open a window to search for physics beyond the Standard Model.
NUCLEUS is a CEvNS experiment conceived for the detection of neutrinos from nuclear reactors with unprecedented precision...
A summary of searches for heavy resonances with masses exceeding 1 TeV decaying into pairs or triplets of bosons is presented, performed on data produced by LHC pp collisions at $\sqrt{s}$ = 13 TeV and collected with the CMS detector during 2016, 2017, and 2018. The common feature of these analyses is the boosted topology, namely the decay products of the considered bosons (both electroweak W,...
This talk presents ATLAS recent measurements of distributions sensitive to Underlying event, the hadronic activity observed in relationship with the hard scattering in the event. The rates and the total transverse momentum was measured for Kaons, Lambda baryons and their ratios as a function of the leading track-jet and is compared to MC predictions which in general fail to describe the data....
The rate of semitauonic $B$ decays has been consistently above theory expectations since these decays were first measured. Recently significant differences between the forward-backward asymmetry in $B\rightarrow D^∗e\nu$ and $B\rightarrow D^∗\mu\nu$ were also reported. Belle II data is well suited to probe such anomalies. The low-background collision environment along with the possibility of...
The study of collective phenomena in ultrarelativistic heavy-ion collisions is nowadays to a great extent built on the so-called flow amplitudes $v_n$ and symmetry planes $\Psi_n$. Both appear as two distinct degrees of freedom in the parametrization of the azimuthal distribution of the produced particles, which is used in the study of the quark-gluon plasma (QGP). Investigating the complex...
Jet and Missing transverse momentum (MET), used to infer the presence of high transverse momentum neutrinos or other weakly interacting neutral particles, are two of the most important quantities to reconstruct at a hadron collider. They are both used by many searches and measurements in ATLAS. New techniques combining calorimeter and tracker measurements, called Particle Flow and Unified...
I describe a reanalysis of data sets that have previously been found to harbor evidence for an unidentified X-ray line at 3.5 keV in order to quantify the robustness of earlier results that found significant evidence for a new X-ray line at this energy. The 3.5 keV line is intriguing in part because of possible connections to dark matter. We analyze observations from the XMM-Newton and...
Measurements of the production of hadrons containing beauty quarks in pp and p-Pb collisions provide an important test of quantum chromodynamics calculations. They also set the reference for the respective measurements in heavy-ion collisions, where the properties of the quark-gluon plasma are investigated. The excellent particle identification, track and decay-vertex reconstruction...
Based on the particle-flow paradigm, a novel hadronic calorimeter (HCAL) with highly granular scintillating glass tiles is proposed to address major challenges from precision measurements of jets at future lepton collider experiments, such as the Circular Electron Positron Collider (CEPC). Compared with the plastic scintillator option, the scintillating glass HCAL design aims for further...
We have analyzed the ATLAS sample of 4-lepton
events, in the region of invariant mass 620$\div$740 GeV. We argue
that, from these data, one can obtain a clear signal for the
existence of a new scalar resonance. Looking for its possible
interpretation, we have compared with the hypothetical second
resonance of the Higgs field that has been recently proposed
and which would couple to...
In this talk, we will present state-of-the-art results for the QED Parton Distribution Functions (PDFs), which have been recently pushed up to next-to-leading logarithmic (NLL) accuracy. NLL PDFs properly take into account the mixing between the electron/positron with the photon and the other fermions, running-$\alpha$ effects and the dependence on the renormalisation and factorisation scheme....
The HistFactory p.d.f. template is per-se independent of its implementation in ROOT and it is useful to be able to run statistical analysis outside of the ROOT, RooFit, RooStats framework. pyhf is a pure-Python implementation of that statistical model for multi-bin histogram-based analysis and its interval estimation is based on the asymptotic formulas of "Asymptotic formulae for...
With a unique geometry covering the forward rapidity region, the LHCb detector provides unprecedented kinematic coverage at low Bjorken-$x$ down to $x \sim 10^{-5}$ or lower. The excellent momentum resolution, vertex reconstruction and particle identification allow precision measurements down to very low hadron transverse momentum. In this contribution we present the latest studies of the...
Panel discussion with all the speaker
This contribution will present a resource-efficient FPGA-based neural network regression model which was developed for potential applications in the future hardware muon trigger system of the ATLAS experiment at the Large Hadron Collider (LHC). Our model uses a neural network regression to significantly improve the rejection of the dominant source of background events in the central detector...
We examine the latest measurements coming from the COHERENT experiment within an EFT framework. To do so, we put forward a formalism which for the first time models correctly within the QFT characterization the interplay between production and detection. After discussing all details involved, we perform a complete phenomenological analysis for CE$\nu$NS data measured on Argon and Cesium-Iodium...
Leptons reconstruction performance plays a crucial role in the precision and sensitivity of the Large Hadon Collider (LHC) data analysis of the ATLAS experiment. The 139/fb of proton-proton collision data collected during the LHC Run-2 poses both a challenge and opportunity for the detector performance. Using di-electron and di-muon resonances we are able to calibrate to sub per-mil accuracy...
Belle II is considering upgrading SuperKEKB with a polarized electron beam. The introduction of beam polarization to the experiment would significantly expand the physics program of Belle II in the electroweak, dark, and lepton flavor universality sectors. For all of these future measurements a robust method of determining the average beam polarization is required to maximize the level of...
Many extensions to the Standard Model predict new particles decaying into two bosons (W, Z, photon, or Higgs bosons) making these important signatures in the search for new physics. Searches for such diboson resonances have been performed in different final states and novel analysis techniques, including unsupervised learning, are also used to extract new features from the data. This talk...
The Milky Way galactic center has been broadly explored looking for indirect dark matter (DM) signals. However, younger galaxies, such as Centaurus A, are expected to gather a much higher DM component due to the formation of a density spike which would have survived to date contrary to the case of our Galaxy.
In this talk, I will present indirect photon signatures of leptophilic DM coming...
One of the most interesting yet-to-be answered questions in Particle Physics is the nature of the Higgs Yukawa couplings and their universality. Key information in our understanding of this question arises from studying the coupling of the Higgs boson to second generation quarks. Some puzzles in the flavor sector and potential additional sources of CP violation could also have their origins in...
Machine learning is a promising field to augment and potentially replace part of the event reconstruction of high energy physics experiments. This is partly due to the fact that many machine learning algorithms offer relatively easy portability to heterogeneous hardware, and thus could play an important role in controlling the computing budget of future experiments. In addition, the capability...
Recent results from the proton-proton collision data taken by the ATLAS experiment on the charmonium and B meson production and decays will be presented. The measurement of $J/\psi$ and $\psi(2S)$ differential cross sections will be reported as measured on the whole Run 2 dataset. The measurement of the differential cross sections of $B^+$ production at 13 TeV and their ratios to those...
In the presence of transition magnetic moments between active and sterile neutrinos, Coherent Elastic Neutrino Nucleus Scattering (CE$\nu$NS) experiments can provide stringent constraints on the neutrino magnetic moment by searching for Primakoff upscattering. I will introduce a new smoking gun signal, a radiative upscattering process with a photon emitted in the final state, which will be...
The detailed study of the Higgs boson is one of the main tasks of contemporary particle physics. Gluon fusion, the main production channel of Higgs bosons at the LHC, has been successfully modelled in QCD up to $\text{N}^3\text{LO}$. To fully exploit this unprecedent theoretical effort, sub-leading contributions, such as electroweak corrections, must be investigated. I will present the...
Trigger strategies for future high-rate collider experiments invariably envisage implementations of Neural Networks on FPGAs. For the HL-LHC case, as well as for FCC-ee and ILC, triggerless approaches are explored where the event selection will be largely committed to Machine Learning models directly interfaced with detector’s front-end readout. Even for the huge amounts of data produced at...
The LHeC and the FCC-he offer singular possibilities for measurement of top properties and EW parameters in DIS, both due to their large centre-of-mass energies and high luminosities. In this talk we will review the most recent studies. We will revisit the determination of the top mass through inclusive measurements. In addition, we will address the possibilities for precise measurements of...
The Liquid Argon Calorimeters are employed by ATLAS for all electromagnetic calorimetry in the pseudo-rapidity region |η| < 3.2, and for hadronic and forward calorimetry in the region from |η| = 1.5 to |η| = 4.9. They also provide inputs to the first level of the ATLAS trigger. After successful period of data taking during the LHC Run-2 between 2015 and 2018 the ATLAS detector entered into the...
Neutron stars harbour matter under extreme conditions, providing a unique testing ground for fundamental interactions.
Dark matter can be captured by neutron stars via scattering, where kinetic energy is transferred to the star.
This can have a number of observational consequences, such as theheating of old neutron stars to infra-red temperatures.
Previous treatments of the capture process...
I discuss exclusive $B_c$ decays. FIrst I consider the case of semileptonic modes $B_c^+\to B_a\bar{l}\nu_l$ and $B_c^+\to B^*_a(\to B_a\gamma)\bar{l}\nu_l$, with $a=s,d$ and $l = e,\mu$ in the Standard Model (SM) and in its extension based on the low-energy Hamiltonian comprising the full set of dimension-6 semileptonic $c\to s,d$ operators with left-handed neutrinos. Heavy quark spin...
The study of femtoscopic correlations in high-energy collisions is a powerful tool to investigate the space-time structure of the particle emitting region formed in such collisions, as well as to probe interactions that the involved particles may suffer after being emitted. This talk presents an overview of recent results on the two-particle femtoscopic correlations measurements using charged...
In this work, we derive lower mass bounds on the $Z^\prime$ gauge boson based on the dilepton data from LHC with 13 TeV of center-of-mass energy, and forecast the sensitivity of the High-Luminosity-LHC with $L=3000 fb^{-1}$, the High-Energy LHC with $\sqrt{s}=27$~TeV, and also at the Future Circular Collider with $\sqrt{s}=100$~TeV. We take into account the presence of exotic and invisible...
The determination of charged particle trajectories in collisions at the CERN Large Hadron Collider (LHC) is an important but challenging problem, especially in the high interaction density conditions expected during the future high-luminosity phase of the LHC (HL-LHC). Graph neural networks (GNNs) have been successfully applied to this problem by representing tracker hits as nodes in a graph,...
We discuss a new experiment based on the proposal [1] to observe for the first time the coherent elastic neutrino-atom scattering (CEνAS), using electron antineutrinos from tritium decay and a liquid He-4 target, and also to search neutrino electromagnetic properties [2,3], including the neutrino magnetic moment. The experiment is under preparation within the research program of the National...
The innermost tracking system of the CMS experiment, called the tracker, consists of two tracking devices, the Silicon Pixel and Silicon Strip detectors. The tracker was specifically designed to very accurately determine the trajectory of charged particles or tracks. This is achieved by ensuring an accuracy or so-called intrinsic resolution on the position measurement of the electrical signals...
We present the first determination of $|V_{cb}|$ from $q^2$-moments of inclusive $B \to X_c \ell \bar \nu_\ell$ decays, with $q^2$ denoting the dilepton invariant mass. The $q^2$ moments and the total rate are reparametrization invariant quantities and depend on a reduced set of non-perturbative parameters. This reduced set opens a way to extract these parameters up to $1/m_b^4$ purely from...
Reliable modeling of quasielastic (QE) lepton scattering on nuclei is of great interest to neutrino oscillations experiments, especially at low values of the 3-momentum transfer $\bf \vec q$. We report on a phenomenological analysis of all available electron scattering data on carbon within the framework of the superscaling model (including Pauli blocking). In addition to the expected...
We study the different mechanisms contributing to photoproduction of quarkonium pairs in NRQCD at the EIC, namely via unresolved and resolved photons. In the latter case, we study the relevance of double parton scatterings along the lines of our recent study on 4-jet photoproduction[1]. Like for the hadroproduction case [2,3,4,5,6,7], quarkonium-pair photoproduction probes, in different...
The LHeC is the proposal of an upgrade of the HL-LHC to provide electron-hadron collisions with centre-of-mass energies $\mathcal{O}(1)$ TeV and instantaneous luminosities $\mathcal{O}(10^{34})$ cm$^{-2}$s$^{-1}$. The existing design identifies IP2 as the interaction point. In this talk we present initial accelerator considerations on a common IR to be built which alternately could serve $𝑒ℎ$...
We propose and describe a dark matter particle which is consistent with current experiment and observation, and which should be detectable within the next 1-5 years [1,2]. This particle is unique in that it has (i) precisely defined couplings and (ii) a well-defined mass of about 72 GeV. It has not yet been detected because it has no interactions other than second-order gauge couplings, to W...
MUonE is a proposed experiment which aims at an independent and precise determination of the muon g – 2 , based on the measurement of the hadronic contribution to the running of the electromagnetic coupling constant in the space-like region. This can be achieved by measuring with extremely high accuracy the shape of the differential cross section of the μe elastic scattering, using a 160...
We analyze a flavor symmetric model to understand neutrino masses and mixing based on the $A_4$ discrete symmetry. Here both minimal type-I seesaw and scotogenic mechanisms contribute towards explaining tiny light neutrino mass. The minimal type-I seesaw generates tribimaximal neutrino mixing at the leading order. The scotogenic contribution acts as a deviation from this first-order...
To investigate the Euclid Near Infrared Spectrometer and Photometer (NISP) capabilities, Spectral Energy Distribution (SED) models of galaxies located at 0.3 ≤z ≤2.5 have been constructed, simulated using the TIPS simulator of the NISP red grism, and analyzed focusing on emission lines measurements.
These simulations will enable evaluating the spectroscopic survey performances of the Euclid...
The ATLAS Visitor Centre at CERN is a guided exhibition space that has been welcoming visitors from around the world since 2009. In a recent effort, ATLAS has reinvented the whole exhibition, replacing the original installation with a completely new exhibition. This contribution will highlight the basic concept behind the new exhibition, introduce its main components along with details on...
We have developed a novel approach to reconstruct events detected by a water-based Cherenkov detector such as Super- and Hyper-Kamiokande using an innovative deep learning algorithm. The algorithm is based on a Generative Neural Network whose parameters are obtained by minimizing a loss function. In the training process with simulated single-particle events, the Generative Neural Network is...
In this poster, we present the development of an ongoing search of dark matter particles with sub-GeV masses using the MicroBooNE detector. The MicroBooNE experiment is a liquid argon time projection chamber with great calorimetry and particle identification capacities located at Fermilab. We consider dark matter particles that would be produced through neutral meson decay by mesons coming...
The proposed magnetised Iron Calorimeter (ICAL) detector in the India Based Neutrino Observatory (INO) aims to study neutrino oscillation parameters through interactions of atmospheric neutrinos at ICAL. We present here the first results of tau neutrino events analysis at ICAL. We have written a C-based Monte Carlo neutrino event generator for the proposed detector. It generates Charged...
Silicon photomultipliers (SiPM) are candidates selected as the potential photodetector technology for the dual-radiator Ring-Imaging Cherenkov (dRICH) detector at the future Electron-Ion Collider (EIC). SiPM optical readout offers a large set of advantages being cheap devices, highly efficient and insensitive to the high magnetic field (~ 1.5 T) at the expected location of the sensors in the...
We studied the four models implemented in PYTHIA8 for the production of dark matter or associated particles at the LHC based on the simplest extensions of the Standard Model. The first model includes dark matter production via s-channel mediators. This includes production in association with a jet for a vector boson or scalar mediator. Aside from the standard simplified models where the dark...
Some mesons produced by the interaction between primary cosmic rays and the air molecules in the upper atmosphere decay into muons without further interaction. The density of the atmosphere decreases as the temperature of the atmosphere increases, reducing the chance of secondary cosmic-ray particles interacting with atmospheric molecules and hence increasing the chance of decaying into muons....
Junior high school (scuola media) represents the weakest sector of the education system in Italy and perhaps in other countries.
This is largely due to the absence of a specific formation of the teachers during their academic studies, at variance with what occurs for the primary school. This holds also for the teaching of science in general and of physics in particular. In most cases science...
Making the large datasets collected at the LHC accessible to the public is a considerable challenge given the complexity and volume of data. Yet to harness the full scientific potential of the facility, it is essential to enable meaningful access to the data by the broadest physics community possible. Here we present a tool, the LHCb NTuple Wizard, which leverages the existing computing...
Although many suggestions for BSM searches at future colliders exist, most of them concentrate on additional scalars that have masses higher than the current SM scalar mass. I will give a short overview on the current status of models and searches for scalars with masses below this. Based on https://arxiv.org/abs/2203.08210
Analysis of anisotropy of the arrival directions of galactic positrons and electrons has been performed with the Alpha Magnetic Spectrometer on the International Space Station. These results differentiate between point-like and diffuse sources of cosmic rays for the explanation of the observed excess of high energy positrons. The AMS results of the dipole anisotropy are presented along with...
DAMA/LIBRA has consistently reported an observation of annual modulation in residual event rate over 20 years but no definite evidence from other experiments. Apart from the dark matter hypothesis, recent studies reported the possibility of the annual modulation of DAMA/LIBRA due to the slowly varying time-dependent background after subtracting the average background each year. Here, we...
The actual and next decade will be characterized by an exponential increase in the exploration of the Beyond Low Earth Orbit space (BLEO). Moreover, the firsts tentative to create structures that will enable a permanent human presence in the BLEO are forecast. In this context, a detailed space radiation field characterization will be crucial to optimize radioprotection strategies (e.g.,...
For Run 3 data taking the track reconstruction algorithm used for
the ATLAS Inner Detector has been optimized with a particular focus on
minimizing the number of erroneous and low-quality tracks processed by
rejecting them as early as possible. This ensures a collection of high-quality
tracks to downstream reconstruction and physics, a key aspect in ATLAS. This
poster is dedicated to the...
The Virtual Visit service run by the ATLAS Collaboration has been active since 2010. The ATLAS Collaboration has used this popular and effective method to bring the excitement of scientific exploration and discovery into classrooms and other public places around the world. The programme, which uses a combination of video conferencing, webcasts, and video recording to communicate with remote...
High Energy Accelerator Research Organization (KEK) launched an education project for the fabrication of an accelerator named "AxeLatoon" in 2020 together with the National Institute of Technology (KOSEN). This project aims to improve engineering skills of students and foster the next generation of accelerator researchers by providing hands-on training in the field of accelerator...
Elementary magnetic monopoles have been a question of electromagnetism for the last 150 years. However, most monopoles have been searched in the large mass and large magnetic charge region during the period but have not been discovered yet. Therefore, assuming that monopoles may exist in the low mass and low charge regions, we designed an experiment to search for elementary magnetic charges...
As we enter the era of precision at the LHC, excluding specific charge-parity (CP) scenarios is no longer enough: we want to detect and precisely measure the angle that determines the possible admixture of CP-even and CP-odd components in the Higgs-top Yukawa coupling. The Higgs boson production in association with top-quarks ($t\bar{t}H$ and $tH$), in the $H\rightarrow b\bar{b}$ decay...
We perform the shadow calculation in a quantum corrected black hole background and at the same time give a generalised prescription for shadow calculation in black holes in an expanding universe. We apply the method of calculation of shadow in the case of a loop quantum gravity motivated regular black hole. In the process, we also construct the rotating loop quantum gravity inspired solution...
Quasinormal modes (QNMs), the damped oscillations in spacetime that emanate from a perturbed body as it returns to an equilibrium state, have served for several decades as a theoretical means of studying n-dimensional black hole spacetimes. These black hole QNMs can in turn be exploited to explore beyond the Standard Model (BSM) scenarios and quantum gravity conjectures. With the...
For more than half a century, expensive and bulky modules (e.g. the standard NIM, Nuclear Instrumentation Modules) and electronic boards have been used in nuclear physics laboratory courses, in order to filter, shape and digitize the analog signals coming from particle detectors. Recently it has become technically possible to miniaturize these circuits within ASICs, but their high cost and...
LEGEND is the successor of the GERDA and the MAJORANA DEMONSTRATOR experiments searching for neutrinoless double beta decay with high-purity germanium detectors enriched in the isotope $^{76}$Ge. Its first phase, currently under commissioning at Laboratori Nazionali del Gran Sasso, will reach a half-life sensitivity of ~10$^{27}$ yr to this lepton-number violating process by employing 200 kg...
The Jiangmen Underground Neutrino Observatory (JUNO) central detector (CD) will be the world’s largest liquid scintillator (LS) detector to probe multiple physics goals, including determining neutrino mass ordering, measuring solar neutrino, detecting supernova neutrino, etc. With an unprecedented $3\%$ effective energy resolution and an energy nonlinearity better than 1% requirement to...
The Jiangmen Underground Neutrino Observatory (JUNO) is a neutrino medium baseline experiment under construction in southern China, expecting to begin data taking in 2023. The experiment has been proposed with the main goals of determining the neutrino mass ordering and measuring three oscillation parameters with sub-percent precision. To reach these goals, JUNO is located about 53$\,$km from...
It is well-established that high-multiplicity pp and p–Pb collisions exhibit a collective-like behaviour and signatures, like the strangeness enhancement and the ridge behaviors, that were commonly attributed to the formation of the Quark-Gluon Plasma. In this contribution, we investigate the possible similarities between pp, p–A and A–A collisions by studying the charged-particle production...
ALICE is the experiment at the LHC specifically designed to study the properties of the quark-gluon plasma, a deconfined state of matter created in ultrarelativistic heavy-ion collisions. During LHC Run 1 and Run 2, ALICE recorded data in several collision systems and different centre-of-mass energies. In this context, the study of charged-particle production as a function of multiplicity play...
A densely connected feed-forward neural network is capable to classify poles of scattering amplitude if fed with experimentally measured values of energy-dependent production intensity. As shown in [1], such a neural network trained with synthetic intensities based on effective range approximated amplitudes classifies the $P_c(4312)$ signal as a virtual state located at the 4th Riemann sheet...
Antideuteron and antihelium nuclei have been proposed as promising channels for dark matter particle detection. In fact, a possible DM production of antinuclei, assuming DM is made of WIMPs annihilating or decaying in the Galaxy, is at least one order of magnitude larger, at energies between 0.1-1 GeV/nucleons, than the astrophysical background coming from interactions of primary cosmic rays...
In this paper, we accomplish the complete one-loop matching of the type-I seesaw model onto the Standard Model Effective Field Theory (SMEFT), by integrating out three heavy Majorana neutrinos with the functional approach. It turns out that only 31 dimensionsix operators (barring flavor structures and Hermitian conjugates) in the Warsaw basis of the SMEFT can be obtained, and most of them...
The $U(1)_{L_\mu-L_\tau}$ model is one of the simplest anomaly free models to feature a new gauge boson $Z'$ by extending the Minimal Standard Model (MSM) group $G_{\text{MSM}}\equiv SU(3)_{\text{QCD}}\otimes SU(2)_{\text{Weak}}\otimes U(1)_Y\rightarrow G_{\text{MSM}}\otimes U(1)_{L_\mu-L_\tau}$. This hypothetical new gauge boson $Z'$ could affect the cooling mechanism of a core-collapse...
Cosmic Muon Images[1] is a citizen science project from the domain of muon tomography (muography) with the goal to use machine learning and exploratory data analysis to improve the discrimination between particle detector signal and the different kinds of background. It is one of the four citizen science demonstrators developed within the EU-funded (GA-872859) REINFORCE project[2] (Research...
In high energy physics, often effective field theories (EFTs) are used to parameterise the possible ways in which new physics at some high-energy interaction scale $\Lambda_\mathrm{EFT}$ may indirectly modify differential cross sections or branching fractions. To constrain the EFT parameter space, profile likelihood ratio (PLR) are used to perform frequentist hypothesis tests and calculate...
Cryogenic detectors have reached low-threshold and high energy resolution, making them useful tools to detect sub-keV nuclear recoils induced by Coherent Elastic Neutrino-Nucleus Scattering, or interactions with light Dark Matter. However, these detectors lack calibration for nuclear recoils at this energy scale. The CRAB method proposes to use nuclear recoils produced by gamma de-excitation...
We present the current status of the theory of resummed quantum gravity. We focus on its prediction for the cosmological constant in the context of the Planck scale cosmology of Bonanno and Reuter and its relationship to Weinberg's asymptotic safety idea. We discuss its relationship to Weinberg's soft graviton resummation theorem. We also present constraints from and consistency checks of the...
Production measurements of heavy quarks in pp collisions provide a stringent test to pQCD calculations. Analysing their production as a function of charged particle multiplicity allows us to study multi-parton interactions, which are expected to have a relevant role in charged particle production at high energy at the LHC. Moreover, the comparison with theoretical models allows investigating...
Dark matter (DM) particles are predicted to decay into Standard Model particles which would produce signals of neutrinos, gamma-rays, and other secondary particles. Neutrinos provide an avenue to probe astrophysical sources of DM particles. We review the decay of dark matter into neutrinos over a range of dark matter masses from MeV/c2 to ZeV/c2. We examine the expected contributions to the...
The instantaneous luminosity of the Large Hadron Collider (LHC) at CERN will be increased up to a factor of seven with respect to the original design value to explore higher energy scale. In order to benefit from the expected high luminosity performance, the ATLAS Muon System was upgraded with its first station end-cap Small Wheel system replaced by a New Small Wheel (NSW) detector. The Muons...
The Daya Bay reactor neutrino experiment provided the first non-zero measurement of the neutrino mixing angle $\theta_{13}$ with more than 5 $\sigma$ significance using a sample of antineutrinos identified via neutron capture on gadolinium (nGd) in 2012. In 2014 and 2016, the DayaBay experiment reported independent rate-only measurements of $\theta_{13}$, utilizing sample of events identified...
Abstract: With eight identically designed underground detectors deployed at different baselines from six 2.9 GWth nuclear reactor cores, the Daya Bay Reactor Neutrino Experiment has achieved unprecedented precision in measuring the neutrino mixing angle $\theta_{13}$ and the neutrino mass-squared difference $\Delta m^2_{32}$ through the inverse beta decay (IBD) reaction with the final state...
The high-luminosity upgrade to the LHC (HL-LHC) leads to considerable challenges for the ATLAS detector, including greater radiation exposure to the on-detector electronics and increased pileup from low momentum collisions affecting trigger selection performance. The ATLAS Tile Calorimeter (TileCal) is a hadronic sampling calorimeter made of steel tiles as absorber and scintillating plastic...
The China Jinping Underground Neutrino Experiment~(CJPL) forsees completion of phase II construction around 2025. A hundred-ton liquid solar neutrino detector, Jinping Neutrino Experiment~(JNE), will be built 1 year after that.
We are going to review the status and plans of the project, including construction of the experiment site, design of the detector, instrumentation of the fast frontend...
KNU Advanced Positronium Annihilation Experiment (KAPAE) aims to detect visible rare positronium decay, search for C, CP, and CPT violations as well as search for invisible decay. The KAPAE Phase II is designed to increase the sensitivity of the invisible decay of the positronium such as milli-charged particles, mirror world, new light X-boson, and extra dimensions. Compared to KAPAE phase I,...
The dual-readout method is a state of the art calorimetry technique enables outstanding energy resolutions for both electromagnetic and hadronic particles, which has been developed during last two decades. The dual-readout calorimeter detector has been included in the conceptual design reports of both FCC-ee and CEPC projects published in 2018. As a next step, the dual-readout calorimeter R&D...
Signs of turbulence have been observed at the relativistic heavy-ion collision at high collision energies. We study the signatures of turbulence in this system and find that there are significant departures from isotropic turbulence in the initial and the pre-equilibrium stages of the collision. As the anisotropic fluctuations are subleading to the isotropic fluctuations, the Kolmogorov...
The Jiangmen Underground Neutrino Observatory (JUNO) is a next-generation large liquid-scintillator neutrino detector. Its main goal is the determination of neutrino mass ordering, one of the most crucial open questions for neutrinos. To enhance its sensitivity to the mass ordering, JUNO will combine the measurements of reactor anti-neutrinos at low energies with those of atmospheric neutrinos...
The Recoil Directionality project (ReD) within the Global Argon Dark Matter Collaboration aims to characterize the light and charge response of liquid argon (LAr) dual-phase Time Projection Chamber (TPC) to neutron-induced nuclear recoils. The main goal of the project is to probe for the possible directional dependence suggested by the SCENE experiment. Furthermore, ReD is also designed to...
We explore the ability of a recently proposed jet substructure technique, Dynamical Grooming, to pin down the properties of the Quark-Gluon Plasma formed in ultra-relativistic heavy-ion collisions. In particular, we compute, both analytically and via Monte-Carlo simulations, the opening angle $\theta_g$ of the hardest splitting in the jet as defined by Dynamical Grooming. Our calculation,...
Resistive Plate Chambers are operated in several experiments tipically with large fractions of Tetrafluoroethane (C2H2F4) commonly known as R134a, a gas with a high Global Warming Potential (GWP) that has been recently banned by the European Union.
Within the HEP Community, many studies are ongoing to find a good replacement for such component for RPCs working in avalanche mode. One...
Coherent elastic neutrino-nucleus scattering (CEνNS) is a new tool for examining the Standard Model and searching neutrino electromagnetic properties, which can be a manifestation of new physics [1]. We study the electromagnetic contribution to elastic neutrino-nucleon and neutrino-nucleus scattering processes. Following our approach developed for the case of elastic neutrino-electron [2] and...
Neutrino scattering on atomic systems at low-energy transfer is a powerful tool for searching the neutrino electromagnetic interactions [1,2]. The regime of coherent elastic neutrino-atom scattering (CEνAS), i.e., when the atom recoils as a pointlike particle, can be effectively fulfilled in the case of tritium neutrinos [3]. We present theoretical calculations for CEνAS processes on such...
We quantify the anomalous magnetic moment and electric dipole moment of the $\tau$-lepton through the process $e^{+}e^{-} \rightarrow \tau^+ \tau^-\gamma$, within the ranges of energies and luminosities affordable at the future International Linear Collider (ILC) and the Compact Linear Collider (CLIC). The tau-lepton is a key particle in various Beyond the Standard Model (BSM) models and is...
Understanding the reconstructed energy resolution of the electromagnetic (EM) activity in a liquid argon time projection chamber (LArTPC) is important for measurements of neutrino oscillations and searches for beyond standard model physics in the current and future neutrino experiments using the LArTPC technology. The high quality data taken in the ProtoDUNE single phase LArTPC are ideal for...
To extend the potential of discoveries for new physics beyond the
Standard Model as well as precision measurements the High Luminosity (HL)
phase of the large hadron collider at CERN aims to deliver an integrated
luminosity of up to 4000 fb$^{-1}$. To face the challenging environment
associated with the high number of collisions per bunch crossing, the current
inner detector will be...
Magnetic and electric dipole moments of fundamental particles provide powerful probes for physics within and beyond the Standard Model.For the case of short-lived particles, these have not been experimentally accessible to date due to the difficulties imposed by their short lifetimes. The R&D on bent crystals and the experimental techniques developed to enable such measurements are discussed....
DUNE is a future liquid argon TPC neutrino oscillation and astrophysical neutrino experiment that will take data at a rate of 30 PB/year. Prototypes running at CERN have already taken data and collaborators are currently analyzing 1 PB of data and 5-6 PB of simulation from the first prototype run using the resources of 48 DUNE institutions.
The DUNE computing system has evolved from the...
The Electron-ion Collider to be constructed at Brookhaven National Lab is considered to be the next generation "dream machine" in future nuclear physics research. Extending the acceptance of the detector to the far forward region ($\eta > 4$) is extremely important for a wide range of measurements to be performed at EIC. The designs of the far-forward detectors (B0-spectrometer and...
Since the discovery of a scalar particle with mass at 125 GeV in the experiments ATLAS and CMS at LHC, different measurements based on its properties have been performed and the observations nicely correspond to the Higgs boson predicted by the Standard Model of particle physics. Among these measurements, the fiducial and differential cross-section play an important role in the test of the SM...
We compute for the first time the finite size corrections to NLO $2\rightarrow{}2$ scattering in $\phi^4$ theory on a $\mathbb{R}^{1,(3-n)}\times \text{T}^n$ spacetime. In order to do so we developed multiple novel techniques, including denominator regularization, a generalization of a formula by Ramanujan using the sum of squares function, and an analytic continuation of the generalized...
Several astrophysical observations suggest that about 25% of all the energy in the Universe is due to a non-luminous, non-relativistic kind of matter, the "dark matter". Among all the possible models that can fulfill the observed abundance, one of the most promising are Weakly Interacting Particles (WIMPs), thermal relics with masses below 100 TeV. Despite the high number of attempts during...
The IDEA Experiment envisaged at future $e^+e^-$ circular colliders (FCCee and CEPC) is currently under design and optimization with dedicated full-simulation investigations. In this talk, we review the performance of the IDEA fully-projective fiber-based dual-readout calorimeter using the GEANT4 toolkit, from calibration aspects to jet reconstruction. Results concerning complex topologies and...
The muon-catalyzed fusion (μCF) is an established method in which nuclear reactions occur at low temperatures (at or below room) and pressure. The reduced size of diatomic muonic molecules (say ddμ or dtμ) allows fusion to occur due to the greatly enhanced wave-function overlap. Under the current $dMu/DT$ collaboration, an attempt is being made to study the μCF rate and sticking fraction...
Run-2 of the LHC commences the precision era on the energy frontier in particle physics.This enables to perform measure important kinematic distributions which serves as input to constrain the Standard Model Effective Field Theory (SMEFT). SMEFT provides a global interpretationvframework which is model independent where measurements of different processes can be consistently interpreted to...
In the event reconstruction, we need to exact the photon electron(PE) hit time and PE charge from waveforms. We developed a new method called Fast Scholastic Matching Pursuit(FSMP). It is based on a Bayesian principles, and the possible solutions are sampled with Markov Chain Monte Carlo(MCMC). To accelerate the method, we ported it to GPU, and could analysis the waveforms with 0.01s per...
The ever-increasing demands of CERN's Large Hadron Collider and the different projects of future colliders lead the High Energy Physics community to pose quantum computing in the spotlight due to the advantages that can be obtained compared to classical computing. In this context, we explore quantum search algorithms and present a novel benchmark application of a modified version of Grover's...
Gravitational-wave detectors are very sophisticated instruments devoted to the formidable task of measuring space-time deformations as small as a thousandth the size of the atomic nucleus, such as those produced by astrophysical phenomena like the coalescence of compact binary systems. GWitchHunters is a new citizen science initiative developed within the REINFORCE project (funded under the...
With the data collected during the ATLAS Run-2, a combination of measurements of Higgs boson production cross sections and branching fractions is presented. Compared with the previous combination measurement, Zy decay mode is included for the first time. And also a few additional production processes in the bb and tautau decays channels. Several of the previous input measurements are updated...
The Higgs boson trilinear and quartic self-couplings are directly related to the shape of the Higgs potential; measuring them with precision is extremely important, as they provide invaluable information on the electroweak symmetry breaking and the electroweak phase transition. In this paper, we perform a detailed analysis of double Higgs boson production, through the gluon gluon fusion...
This poster will present the first measurement of high-energy reactor antineutrinos at the Daya Bay experiment. Based on the data collected over 1958 days, the Daya Bay experiment has observed about 9000 inverse beta decay candidates in the prompt energy region of 8-12 MeV from six commercial reactors. A multivariant analysis is applied to separate ~2500 signal events from backgrounds...
This work describes a burst detector (BD), consisting of ionization chambers, located at an altitude of 3340 m a.s.l. near Almaty (Kazakhstan).
The high-mountain BD is based on the prototype described earlier in [1]. The experimental data obtained from the prototype of the BD showed a good potential for creating a full-scale setup for studying the cores of extensive air showers. The BD...
We employ the method of Padé approximants to study the higher-order corrections of the massless scalar-current quark correlator. We begin by testing this method in the large-$\beta_0$ limit of QCD, where the perturbative series is known to all orders, using it as a testing ground to determine the best strategy to build the series at higher orders using only the first four coefficients....
A maverick top partner model, decaying to a dark photon was suggested. The dark photon decays to two overlapping electrons for dark photon masses of 100 MeV, and results in a so-called lepton-jet. Leptons jets are mostly unexplored objects in collider searches, and no hints of new physics so far at the LHC makes these unusual topologies attractive. The event includes a top quark as well, which...
With the large datasets on 𝑒+𝑒−-annihilation at the 𝐽/𝜓 and 𝜓(3686) resonances
collected at the BESIII experiment, multi-dimensional analyses making use of
polarization and entanglement can shed new light on the production and decay
properties hyperon-antihyperon pairs. In a series of recent studies performed at
BESIII, significant transverse polarization of the (anti)hyperons has been...
JUNO (Jiangmen Underground Neutrino Observatory) is a 20 kton scintillation detector aimed to study fundamental properties of neutrinos such as neutrino mass ordering and oscillation parameters. The experiment is currently under construction in Kaiping, China and is expected to be commissioned next year. To reach its goals, JUNO will strongly rely on the accurate description of the...
In preparation for LHC Run 3, ATLAS completed a major effort to improve the track reconstruction performance for prompt and long-lived particles. Resource consumption was halved while expanding the charged-particle reconstruction capacity. Large-radius track (LRT) reconstruction, targeting long-lived particles (LLP), was optimized to run in all events expanding the potential phase-space of LLP...
Transport properties of quark-gluon plasma (QGP) created in ultra-relativistic heavy-ion collisions, contain important information on quantum chromodynamics (QCD). With a more precise estimate of the transport properties, such as specific shear and bulk viscosity, it is possible to deepen our understanding of QCD. In this talk, we present our latest study in inferring the transport properties...
Despite modern particle physics being an international endeavour, the vast majority of its educational material is only published in English. By making material available in other languages, physicists can make in-roads with new audiences – especially those very young or very old – in their home countries. The ATLAS Collaboration has published colouring books, a teaching guide, activity...
We report on an update (2021) of a phenomenological model for inelastic neutrino- and electron-nucleon scattering cross sections using effective leading order parton distribution functions with a new scaling variable $\xi_w$. Non-perturbative effects are well described using the $\xi_w$ scaling variable in combination with multiplicative $K$ factors at low $Q^2$. The model describes all...
We have written a general purpose code for analytical inversion of large matrices in C language by treating matrices in block forms. We have optimized the computation speed using in-place inversion, dynamic memory handling and recursion techniques. This code is written to adopt with programs which requires the faster and exact solution of system of linear equations in C and Fortran. We have...
Studying the energy and multiplicity dependence of strange hadron production in pp collisions provides a powerful tool for understanding similarities and differences between small and large collision systems. The charged-particle multiplicity is an important characteristic of the hadronic final state of a pp interaction, but it also reflects the initial dynamics of the collision being strongly...
In this study, the total macroscopic cross sections of thermal and fast neutron interactions with quartz, glass, and some elements such as Al, W, stainless steel doped with B2O3 and Gd2O3 were computed by using Monte Carlo N-Particle Code (MCNP6.2). Also, the macroscopic effective removal cross-sections of fast neutron interactions were theoretically calculated based on the mass removal...
A Cosmic Muon Veto (CMV) detector using extruded plastic scintillators is being built around the mini-Iron Calorimeter (mini-ICAL) detector at the transit campus of the India based Neutrino Observatory, Madurai. The extruded plastic scintillators will be embedded with wavelength shifting (WLS) fibres which emitted photons of longer wavelengths and propagate those to silicon photo-multipliers...
In view of the HL-LHC, the Phase-2 CMS upgrade will replace the entire trigger and data acquisition system. The detector readout electronics will be upgraded to allow a maximum L1A rate of 750 kHz, and a latency of 12.5 µs. The upgraded system will be entirely running on commercial FPGA processors and should greatly extend the capabilities of the current system, being able to maintain trigger...
The TRSM is a new physics model that extends the scalar sector of the SM by two additional CP even scalars. It leads to a large variety of interesting signatures, some of which have not yet been explored by the LHC experiments. I will also discuss the option to explore the hhh final state within this model.
The world’s largest sample of J/ψ events accumulated at the BESIII detector offers a
unique opportunity to investigate η and η′ physics via two body J/ψ radiative or
hadronic decays. In recent years the BESIII experiment has made significant
progresses in η/η′ decays. A selection of recent highlights in light meson
spectroscopy at BESIII are reviewed in this report, including the...
The PandaX-4T experiment, which is aiming to detect dark matter using a liquid xenon detector, is located in the China Jinping Underground Laboratory (CJPL). Various ultralow background technologies are used to control the intrinsic/surface backgrounds, including HPGe gamma spectroscopy, ICP-MS, NAA, radon emanation measurement system, krypton assay station and alpha detection system....
The proposed ICAL detector is designed to detect muons generated from interaction of $\nu_{\mu}$ and anti-$\nu_{\mu}$ with Iron. It is designed with a maximum Magnetic field of about 1.5 Tesla (with 90% of the its volume having > 1 Tesla magnetic field). The purpose of using magnetic field is charge identification and momentum reconstruction of the muons. The mini-ICAL is a fully functional...
The Jiangmen Underground Neutrino Observatory (JUNO) is a neutrino medium baseline experiment under construction in southern China, expecting to begin data taking in 2023. The experiment has been proposed with the main goals of determining the neutrino mass ordering and measuring three oscillation parameters with sub-percent precision. To reach these goals, JUNO is located about 53$\,$km from...
Neutrino electromagnetic properties are of great importance from the point of view of fundamental theory, as well as from the point of view of applications. It is of common knowledge that neutrinos determine to a large extent the dynamics of supernova explosion. In this work we study the effect of matter polarized by external magnetic field on neutrino spin evolution and propagation inside...
The cross sections of deep inelastic scattering processes at the electron-proton collider HERA are a well established tool to test perturbative QCD predictions. Additionally, they can be used to determine the non-perturbative parton distribution functions of the proton. Measurements of jet production cross sections are particularly well suited to also constrain the strong coupling constant. A...
Two-particle normalized cumulants of particle number correlations ($R_{2}$) and transverse momentum correlations ($P_{2}$) measured as a function of relative pseudorapidity and azimuthal angle difference $(\Delta\eta, \Delta\varphi)$ provide key information about particle production mechanism, diffusivity, charge and momentum conservation in high-energy collisions. To complement the recent...
Multiple and concurring evidences reveal that the vast majority of the matter content of the universe is non baryonic and electrically neutral. This component is usually called Dark Matter (DM), for its lack of electromagnetic interactions, and is measured to constitute the 25% of the content of the Universe. The Dark Matter origin and nature is one of the most intriguing puzzle still...
The identification of jets containing b-hadrons, b-tagging, plays an important role in many physics analyses in ATLAS. Several different machine learning algorithms have been deployed for the purpose of b-tagging. These tagging algorithms are trained using Monte-Carlo simulation samples, as such their performance in data must be measured. The b-tagging efficiencies (epsilon_b) have been...
The particle production at very forward region is described by using phenomenological models in simulators of hadronic interactions. Because of lack of experimental data at high energies, there are differences of predictions of particle production cross-section between hadronic interaction models. The interaction models are a mandatory tool for simulating air showers induced by cosmic-rays...
We present a prospect study on di-Higgs production in the HH to bbyy decay channel with the ATLAS experiment at the High Luminosity LHC (HL-LHC). The results are obtained by extrapolating the results from the Run 2 measurement, with 139/fb of data at a center-of-mass energy of 13 TeV, to the conditions expected at the HL-LHC. While there is no sign of di-Higgs production with the current LHC...
Charge-dependent azimuthal anisotropy Fourier coefficients are measured with two- and three-particle correlations in pPb and PbPb collisions. The difference between positively and negatively charged particles for the second-order two-particle $(v_2\{2\})$ and three-particle $(v_2\{3\})$ coefficients for both pPb and PbPb, and third order two-particle coefficient $(v_3\{2\})$ for PbPb, are...
Proton-ion collisions at the LHC and RHIC have yielded unexpected trends, notably in measurements of jet nuclear modification factors as a function of event activity (EA). Recent preliminary measurements from STAR in p+Au collisions at $\sqrt{s_{{\rm NN}}}=200$ GeV demonstrate inherent correlations between high-$Q^{2}$ parton scatterings and EA measured at backward (Au-going) rapidities or...
The LHC high luminosity upgrade will result in about 200 proton-proton collisions in a typical bunch crossing. To cope with expected unprecedented occupancy, bandwidth, and radiation damage, the ATLAS Inner Detector will be replaced with an all-silicon system, the Inner Tracker (ITk). The innermost part of the ITk will be equipped with pixel modules, consisting of pixel sensors and novel...
Jets are collimated sprays of hadrons and serve as an experimental tool for studying the dynamics of quarks and gluons. In particular, differential measurements of jet substructure enable a systematic exploration of the parton shower evolution. The SoftDrop grooming technique utilizes the angular ordered Cambridge/Aachen reclustering tree and provides a correspondence between the experimental...
Measurements of jet fragmentation and jet properties in pp collisions provide a test of perturbative quantum chromodynamics (pQCD) and form a baseline for similar measurements in heavy ion (A-A) collisions. In addition, jet measurements in p-A collisions are sensitive to cold nuclear matter effects. Recent studies of high-multiplicity final states of small collision systems exhibit signatures...
Hadronic resonances are effective tools for studying the hadronic phase in ultrarelativistic heavy-ion collisions. In fact, their lifetime is comparable to the hadronic phase and resonances are sensitive to the hadronic phase effects such as rescattering and regeneration processes which might affect the resonance yields and shape of the transverse momentum spectra. $\Lambda(1520)$ has a...
China Jinping Underground Laboratory (CJPL) is ideal for carrying out MeV-scale neutrino experiments and searching for neutrinoless double-beta-decay. To understand the cosmogenic background, we analyzed 820.28 days of the dataset from a one-ton prototype detector and measured the cosmic-ray muon flux to be $(3.61 \pm 0.19_{\rm stat.} \pm 0.10_{\rm sys.}) \times 10^{-10} {\rm cm}^{-2}{\rm...
We study the capability of INO-ICAL to determine the atmospheric neutrino oscillation parameters. We do not use any generator level information but instead use only the output of GEANT4 simulation of the atmospheric neutrino events in the detector. In a similar previous study, by other authors, only the momentum and direction of the longest track were used. In this study, we consider a third...
We utilize $A_4$ modular symmetry in supersymmetric context to explore type-III seesaw mechanism. Our work includes extra local $U(1)_{B-L}$ symmetry, which helps us to avoid some undesirable terms in the superpotential. As the seesaw being type-III, it involves fermion triplet superfields $\Sigma$ and we have also included weighton singlet field ($\rho$), which gets VEV $(v_{\rho})$ after...
The proposed work is an extension of Standard Model where we have taken three right-handed heavy neutrinos $(N _{iR})$, three neutral fermions $(S_{iL}) (i=1,2,3)$ to follow inverse seesaw mechanism. Extra two scalar singlets have been introduced to give tiny masses to active neutrinos. Quantum numbers of the particles are taken in such a way that the model can be anomaly free under two local...
We discuss the contribution of right-handed neutrinos (RHNs) to the neutrinoless double beta decay within the minimal type-I seesaw model by virtue of the intrinsic seesaw relation of neutrino mass and mixing parameters, and the mass dependence of the nuclear matrix elements from different nuclear models. In the viable parameter space, we find the possibilities of both the enhancement and...
Particulate dark matter captured by a population of neutron stars distributed around the galactic center while annihilating through long-lived mediators can give rise to an observable neutrino flux. We examine the prospect of an idealised gigaton detector like IceCube/KM3NeT in probing such scenarios. Within this framework, we report an improved reach in spin-dependent and spin-independent...
The T2K experiment is a long-baseline accelerator neutrino experiment in Japan that measures the leptonic CP-violating phase $\delta_{CP}$ by studying $\nu_e$ appearance from the $\nu_\mu$ beam at T2K's far detector, Super Kamiokande (SK). The near detector (ND280) stands 280 metres, and SK stands 295 km away from the beam production target. SK is a 50 kton water-Cherenkov detector that...
The ability to identify jets containing b-hadrons (b-jets) is of essential importance for the scientific programme of the ATLAS experiment, underpinning the observation of the Higgs boson decay into a pair of bottom quarks, Standard Model precision measurements, and searches for new phenomena. The ATLAS flavour tagging algorithms rely on powerful multivariate and deep machine learning...
The associated production of a single-top with opposite-sign same-flavor (OSSF) di-leptons, $pp \to t \ell^+ \ell^-$ and $ pp \to t \ell^+ \ell^- + j$ ($j=$light jet), can lead to striking tri-lepton $pp \to \ell^\prime \ell^+ \ell^- + X$ and di-lepton $pp \to \ell^+ \ell^- + j_b + X$ ($j_b=b$-jet) events at the LHC (after the top decays). Although these rather generic multi-lepton signals are...
We present the new simulation model of channeling of electrons and positrons implemented into Geant4. Geant4 [1] is a toolkit for the simulation of the passage of particles through matter. Channeling effect [2] is the effect of the penetration of charged particles through a monocrystal parallel to its atomic axes or planes. Coulomb scattering introduced in the model and based on the CRYSTALRAD...
In this work, we study the new physics effects arising due to the presence of anomalous Wtb vertex through the semileptonic decay modes of the top-quark at the Large Hadron Collider. An estimate of the sensitivities of the aforementioned interaction at 5 sigma CL in the context of top-quark decay-width measurements and cross-section measurements would also be discussed for the pre-existing 13...
The flavor changing neutral b decays with di-leptons and di-neutrinos in the final state provide a great platform to explore physics beyond the standard model(SM). The recent measurements predicted by LHCb on $R_K$, $R_{K_S}$, $R_{K*+}$, $\mathcal{B}(B_s\to \phi \mu^{+}\mu^{-})$ and $\mathcal{B}(B_s\to \mu^{+}\mu^{-})$ proceeding via $b \to s \ell^{+}\ell^{-}$ quark level transitions show a...
The main aim of this paper is to present new sets of non-perturbative fragmentation functions (FFs) for D^0D
0
and D^+D
+
mesons at next-to-leading (NLO) and, for the first time, at next-to-next-to-leading order (NNLO) in the \overline{\mathrm {MS}}
MS
factorization scheme with five massless quark flavors. This new determination of FFs is based on the QCD fit to the OPAL...
Collider searches for dark matter (DM) so far have mostly focussed on scenarios where DM particles are produced in association with heavy standard model (SM) particles or jets. However, no deviations from SM predictions have been observed. Several recent phenomenology papers have proposed models that explore the possibility of accessing the strongly coupled dark sector, giving rise to unusual...
Based on a 448 million $\psi(2S)$ sample, several decay channels of
charmonium states have been searched for at BESIII recently. The decays of $\chi_{c1} ->
\Xi^0 \bar{\Xi^0}$ and $\chi_{c2} -> \Xi^0 \bar{\Xi^0}$, $\psi(2S) -> \Xi^0(1530) \bar{\Xi^0}(1530)$, $\psi(2S)
-> \Xi^0(1530) \bar{\Xi^0}$, and $\psi(2S) -> \omega K_s K_s$ have been observed for the first time. Using data sample above...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment with a 20 kton Liquid Scintillator detector. The primary goal of JUNO is determination of the neutrino mass ordering by measuring the reactor anti-neutrinos. There are 20,012 20-inch PMTs equipped for JUNO, including 15,012 MCP PMTs and 5000 dynode PMTs, which is the largest 20-inch PMT sample in the...
We present an overview of the use of IR-improvement of unintegrable singularities in the infrared regime via amplitude-based resummation in QED X QCD ⊂ SU(2)$_L$ X U$_1$ X SU(3)$^c$. We work in the context of precision LHC/FCC physics. While illustrating such IR-improvement in specific examples, we discuss new results and new issues.
The COMPASS experiment saw a potential new hadron resonance, the
$\text{a}_1(1420)$, that does not fit into the quark model. Its existence
can be independently verified in the semi-leptonic decay of
$\tau^-\to\pi^-\pi^-\pi^+\nu_\tau$. Also, such a study can reveal a clear
picture on the $\text{a}_1(1260)$ axial vector meson parameters, and test
the presence of the pseudoscalar and...
The LHC is restarting the Run-3 operation with keeping longer time with an instantaneous luminosity of about 2.0×10^34 cm-2s-1 from this year to 2025. In order to cope with the high event rate, upgrades of the ATLAS Level-1 Muon trigger system were required. The Level-1 Muon trigger system identifies muons with high transverse momentum by combining data from a fast muon trigger detector,...
The ATLAS trigger system underwent major upgrades between 2018-2022. In particular, the level-1 calorimeter (L1Calo) hardware trigger has been upgraded, and tracking introduced in the software-based missing transverse momentum triggers. This talk will present preliminary performance results using updated algorithms.
Magnetic monopoles have yet been observed despite decades of efforts. KoreA Experiment on Magnetic Monopole (KAEM) searches for fundamental magnetic monopoles in the low-mass and low-charge region. KAEM is configured with a thin aluminum target, sodium-22 source, two 1 T·m solenoids, about 3 m long vacuum chamber, two electromagnetic calorimeters, and the trigger-veto detector. The LYSO, CsI,...
Reconstructing the type and energy of isolated pions from the ATLAS calorimeters is a key step in the hadronic reconstruction. The baseline methods for local hadronic calibration were optimized early in the lifetime of the ATLAS experiment. Recently, image-based deep learning techniques demonstrated significant improvements over the performance over these traditional techniques. This poster...
To characterize the Near Infrared Spectro-Photometer (NISP) instrument optical capability before the launch in orbit of the Euclid telescope, foreseen in 2023, data analysis of ground-based campaign tests made in laboratory as well as Monte Carlo simulations that mimic the expected NISP performances have been perfomed.
These pre-launch tests have been analyzed to assess the fulfillment of the...
Cosmic Rays (CR) inside the Heliosphere interact with the solar wind and with the interplanetary magnetic field, resulting in a temporal variation of the cosmic ray intensity near Earth for rigidities up to few tens of GV. This variation is known as Solar Modulation. Previous AMS results on proton and helium spectra showed how the two fluxes behave differently in time. To better understand...
A new detector capable of measuring the LHC luminosity has been installed at the interaction point of LHCb. It is named Probe for LUminosity MEasurement - PLUME. This detector is undergoing commissioning and will operate throughout LHC Run 3. It will enable real time monitoring of beam condition parameters such as luminosity, number of visible interactions per bunch crossing, background; it...
A momentum charge correlation ratio observable $r_{c}$, generalized from the balance function [1], is measured using data recorded with the H1 experiment at HERA during 2003 to 2007. This variable distinguishes between same-sign and opposite-sign charged particle pairs[2] in a jet. The average $r_{c}$ is studied for two configurations (prongs) of the leading particles in the jet, defined with...
The measurement of hadronic resonance production in heavy-ion collisions at the LHC has led
to the observation of a prolonged hadronic phase after hadronisation. Due to their short
lifetimes, resonances experience the competing effects of regeneration and rescattering of the
decay products in the hadronic medium. Studying how the experimentally measured yields are
affected by these...
The Compact Muon Solenoid (CMS) experiment is a general-purpose detector installed in the Large Hadron collider (LHC). The High Luminosity-LHC (HL-LHC) will provide 10 times higher luminosity compared to the design of the LHC. To accommodate this increase and to enhance the performance of the CMS experiment, the forward region of the muon system will be equipped with 3 new sets of stations...
Recent measurements in high multiplicity proton-proton collisions have shown the emergence of several features that are reminiscent of QGP phenomenology, one of which is the enhanced production of strange and multi-strange hadrons with respect to non-strange ones. Strange hadron production represents a key probe to study QGP formation in hadronic collisions as well as to understand the...
CJPL is an ideal place for low background facilities due to its deepest rock overburden. To prepare for future liquid scintillator based experiments such as solar neutrino observation or 0$\nu\beta\beta$ searching, Jinping 1-t prototype is built for measuring various backgrounds and verify new technologies. In 2017-2020, it has detected numerous MeV radioactive background events, hundreds of...
A combination of projection studies of non-resonant Higgs boson pair production is performed in the bbyy and bbtautau decay channels with the ATLAS detector, assuming 3000/fb of proton-proton collision data at a center-of-mass energy of sqrt{s} = 14 TeV at the HL-LHC. The projected results are based on extrapolations of the Run 2 analyses conducted with 139/fb data at $\sqrt{s}$ = 13 TeV. In...
The magnetized iron calorimeter (ICAL) detector proposed at the India-based Neutrino Observatory will be a 51 kton detector made up of 151 layers of 56 mm thick soft iron layers with 40 mm air gap in between where the RPCs, the active detectors, are placed. The main goal of ICAL is to make precision measurements of the neutrino oscillation parameters using the atmospheric neutrinos as source....
The Alpha Magnetic Spectrometer is a high energy spectrometer onboard of the international space station taking data since 2011 continuously. AMS detected a component of Z>2 ions with rigidities below the rigidity cutoff and located in the South Atlantic Anomaly crossing the instrument from both down-going and up-going directions.
The Deep Underground Neutrino Experiment (DUNE) is an international particle physics experiment and its primary scientific objective is a precision measurement of neutrino oscillation parameters. While the experiment was designed to focus on understanding neutrinos accurately, DUNE's unique experimental environment is expected to provide excellent opportunities for the potential discovery of...
Nucleon Decay is one of the apparent consequences of Baryon Number Violation, as predicted in many Grand Unified Theories (GUTs). It could give an explanation to the asymmetry of matter and anti-matter in the universe. Many experiments have been constructed to search for the nucleon decays while no clues are found. Jiangmen Underground Neutrino Observatory (JUNO), with more than 40k PMTs...
Precise knowledge of proton parton distribution functions is a crucial element of accurate predictions of both Standard Model and Beyond Standard Model physics at hadron colliders such as the LHC. We present a PDF fit at next-to-next-to-leading order in QCD demonstrating the constraining power of a diverse range of ATLAS measurements, in combination with deep-inelastic scattering data from...
Nowadays Machine Learning (ML) techniques are successfully used in many areas of High-Energy Physics (HEP), e.g. in detector simulation, object reconstruction, identification, Monte Carlo generation. ML will play a significant role also in the upcoming High-Luminosity LHC (HL-LHC) upgrade foreseen at CERN, when a huge amount of data will be produced by LHC and collected by the experiments,...
Neutrinos produced in an early stage of the Big Bang are believed to pervade the Universe.
The Ptolemy project is studying novel experimental techniques to observe this relic cosmological background neutrinos and to eventually study their flux and compare it with cosmological models.
This requires to face challenges in material technologies and radio-frequency radiation detection...
In this study, we use PYTHIS8.2 for the simulation of Multiparton Interactions using different PDF sets from LAHPDF6. Altogether five parameters were selected for the final tune depending on their sensitivity to the selected observables at 13TeV published by ATLAS Collaboration. Simulated experimental analysis data is obtained using the Rivet analysis toolkit. These tunes describe the selected...
This study is based on a survey conducted during the International Masterclasses days taken place in almost all the Italian Universities during, before and after the Covid-19 pandemic. About 1400 students per year, mostly enrolled in scientific high schools, performed data analysis using real data collected at high energy physics experiments (ALICE, ATLAS, Belle II, CMS, LHCb), about 100...
The ATLAS upgrade for HL-LHC operation includes the installation of an entirely new all-silicon Inner Tracker (ITk). The silicon strip region comprises 165m^2 of instrumented area, made possible by the mass production of silicon strip sensors. This area is covered in a nearly hermetic way. Multiple sensor shapes are utilized: square sensors in the barrel part and skewed trapezoidal sensors...
At BESIII, the electromagnetic form factors (EMFFs) and the pair production cross
sections of various baryons have been studied. The proton EMFF ratio |GE/GM| is
determined precisely and line-shape of |GE| is obtained for the first time. The recent results of neutron EMFFs at BESIII show great improvement in comparison with previous experiments. Cross sections of various baryon pairs...
Latest results on inclusive and differential single top quark production cross sections are presented using the data collected by CMS. The single top quark analyses investigate separately the production of top quarks via t-channel exchange, via the associated production with a W boson (tW), and via the s-channel.
Having access to the parton-level kinematics is important for understanding the internal dynamics of particle collisions. In this talk, we present new results aiming to an efficient reconstruction of parton kinematics using machine-learning techniques. By simulating the collisions, we related experimentally-accessible quantities with the momentum fractions of the colliding partons. We used...
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kt liquid scintillation detector, which will be completed in 2023 as the largest of its kind. JUNO aims to determine the neutrino mass ordering by observing the energy dependent oscillation probabilities of reactor
anti-neutrinos.
JUNOs large volume provides the opportunity to detect atmospheric neutrino events with lower energies...
Neutrinoless double beta decay (0$\nu\beta\beta$) is the most sensitive experimental probe to address the quest that whether neutrinos are Majorana or Dirac particles $[1]$. The observation of 0$\nu\beta\beta$ would not only establish the Majorana nature of neutrinos but also provide direct information on neutrino masses and probe the neutrino mass hierarchy. The present work $[2]$ would...
We present the study of the massless dark photon in the $K_{L}^{0}\rightarrow\gamma\bar\gamma$ decay at the J-PARC KOTO experiment. The massless dark photon ($\bar\gamma$) is different from the massive one because it has no direct mixing with the ordinary photon, but it could interact with the SM particles through direct coupling to the quarks. In some theoretical predictions, the...
An analysis of about 211 million $B^{0}$-$\bar{B}^{0}$ pairs produced in $e^+e^-$ collisions at the $\Upsilon(4S)$ resonance and recorded by the $BABAR$ experiment is used to search for the decay $B^{0}\to\psi_{D}\Lambda$, which produces the dark matter particle ($\psi_{D}$) and baryogenesis simultaneously. The hadronic recoil method has been applied with one of the $B$ mesons from...
A search for central exclusive production (CEP) of top quark pairs is presented using collision data collected by CMS and CT-PPS in 2017. A data-driven method to estimate the background from pileup protons is described, as well as the development of a BDT classifier to separate the exclusive top signal from the inclusive ttbar background. The first-ever upper limits on the cross-section of...
A search for a charged scalars can provide clean, rare, and direct indications for New Physics (NP) beyond the standard model. Therefore, in view of the above, we investigate one of the most important channels in the 2HDM Type-I model, assuming h(H) to mimic the observed resonance ∼ 125 Gev; we ponder the practicality of the associated charged Higgs production through the pp → H± W∓ channel...
A search for pair production of doubly charged Higgs ($H^{\pm \pm}$) bosons, each decaying into a pair of prompt, isolated, and highly energetic leptons with the same electric charge, is presented. The search uses a proton--proton collision data sample at a centre-of-mass energy of 13 TeV corresponding to 139 fb$^{-1}$ of integrated luminosity recorded during the Run 2 of the Large Hadron...
Providing a possible connection between neutrino emission and gravitational-wave (GW) bursts is important to our understanding of the physical processes that occur when black holes or neutron stars merge. In the Daya Bay experiment, using the data collected from December 2011 to August 2017, a search has been performed for electron-antineutrino signals coinciding with detected GW events,...
In a neutrino system, the phenomenon of decoherence refers to the loss of coherence between the three neutrino mass eigenstates. The neutrino system, like any other system, is open to the environment and should be treated as such. Now as we know, the oscillation of neutrinos is caused by the coherent superposition of the neutrino mass eigenstates. But due to the open nature of the system,...
CMS searches for exotic resonances are presented, based on the 13 TeV pp collision data.
Since the discovery of neutrino oscillations due to their nonzero masses, these particles have been in the spotlight in the context of physics beyond the Standard Model. The left-right symmetric extension of the Standard Model can provide answers to many unsolved questions of the universe including parity violation of weak charged current, mass generation mechanism of neutrinos and their small...
The poster presents the full run-2 results for the search for a heavy resonance decaying into a Z or W boson and a Standard Model Higgs boson (h), with the Z or W boson decaying into two leptons and the Higgs boson decaying into two b quarks. The search probed the reconstructed invariant or transverse mass distributions of the Zh and Wh candidates in the mass range from 220 GeV to 5 TeV. Upper...
Several extensions of the Standard Model predict a second complex Higgs doublet. The corresponding additional scalars can exhibit flavour changing neutral currents, while in the alignment limit the SM Higgs properties are unaffected. This poster presents the results of a search for new scalar particles featuring flavour-violating couplings in the quark sector, in the multi-lepton and...
Many extensions of the Standard Model predict the existence of long-lived particles leading to highly unconventional experimental signatures for which standard searches are not sensitive. In this poster we present a search for pairs of neutral long-lived particles decaying hadronically and giving rise to displaced jets. This analysis considers benchmark hidden sector models of neutral...
The existence of magnetic monopoles is predicted by various theories of physics beyond the Standard Model. The introduction of magnetic monopoles can explain the electric charge quantization and restore the symmetry in Maxwell's equations with respect to magnetic and electric fields. Despite intense experimental searches, they remain unobserved to date.
The Large Hadron Collider (LHC) is...
A search for resonances in events with at least one isolated charged lepton ($e$ or $\mu$) is performed using 139 fb$^-1$ of $\sqrt{s}$ = 13 TeV proton--proton collision data recorded by the ATLAS detector at the LHC. Deviations from Standard Model predictions are tested in three- and four-body invariant mass distributions constructed from jets and leptons. The study reports first...
New particles beyond the standard model (SM) can affect the standard model processes by taking part in quark loops in the diagrams. In this poster, the recent CMS results on rare decays involving heavy quarks and leptons are discussed.
Based on 10 billion $J/\psi$ events accumulated by the BESIII detector, we show
searches for the rare process of $J/\psi$ weak decays. We also search for other rare
decay process, such as the FCNC process $D^0\to\pi^0\nu\bar{\nu}$, and the $J/\psi\to 4
leptons$. Using $J/\psi$ decay, BESIII also produce millions of Hyperson, which can be
used to search for the rare decay process...
Studies of Higgs boson pair production (HH) represent the next crucial step to constraining the Higgs sector and allow the chance to refine measurements of the Higgs boson self-coupling. While previous searches have focused on the HH production in the gluon-gluon and vector-boson fusion modes, this analysis documents a new search, with 139 $\rm fb^{-1}$ of pp collisions at $\sqrt{s}$ = 13 TeV...
A search is made for a vector-like $T$ quark decaying into a Higgs boson and a top quark in 13 TeV proton-proton collisions using the ATLAS detector at the Large Hadron Collider with a data sample corresponding to an integrated luminosity of 139 fb$^{-1}$.
The all-hadronic decay modes $H \rightarrow b\bar{b}$ and $t \rightarrow bW \rightarrow bq\bar{q}'$ are reconstructed as large-radius jets...
A search for the direct production of pairs of charginos, each decaying into a first neutralino (LSP) and a W boson which in turn decays leptonically, is presented. Previous LHC Run 2 analyses have already excluded with a 95% CL the existence of chargino and neutralino in regions where the difference between their masses is much greater than the W boson mass. The aim of the current search is...
The dimuon decay of the Higgs boson is the most promising process for probing the Yukawa couplings to the second generation fermions at the Large Hadron Collider (LHC). In this poster, we present a search for this important process using the data corresponding to an integrated luminosity of 139 fb$^{-1}$ collected with the ATLAS detector in $pp$ collisions at $\sqrt{s} = 13 \mathrm{TeV}$ at...
In the Standard Model (SM) the mass generation of fermions is implemented through Yukawa couplings to the Higgs boson. Experimental evidence exists for the Higgs boson couplings to second and third generation leptons through its decay to muon and tau pairs, but for quarks direct evidence exists only for the third-generation couplings, and direct searches for inclusive decays of the Higgs boson...
Final states with tau leptons are experimentally challenging but open up exciting opportunities for supersymmetry (SUSY) searches. SUSY models with light sleptons could offer a dark matter candidate consistent with the observed relic dark matter density due to accessible co-annihilation processes. Additionally, final states with hadronically decaying taus in Run-2 benefit from the increased...
Limited with the detection threshold, traditional dark matter searches are not sensitive to small mass WIMPs. To reduce the threshold, events with ionized electron signal only (S2-only) are selected. This talk will report the latest progress of S2-only search with PandaX-4T commissioning data. Another strategy is to search for cosmic ray boosted small mass WIMPs. Search result based on the...
A search for Dark Matter (DM) produced in association with top quarks, with a focus on the dileptonic channel, is presented. This kind of search provides sensitivity to models where the DM couples to the Standard Model (SM) via a spin-0 mediator with a yukawa coupling, which can arise in a number of BSM physics scenarios, for example the 2HDM+a model. This analysis is part of the CMS search...
Two-particle differential correlators of particle numbers ($R_2$) and particle transverse momenta ($P_2$ and $G_2$), recently measured in Pb-Pb collisions, emerged as powerful tools to gain insights into particle production mechanisms and infer transport properties such as the ratio of shear viscosity to entropy density of the medium created in Pb-Pb collisions. In this talk, recent ALICE...
Tokai to Kamioka (T2K) is an accelerator long baseline experiment that measures the neutrino oscillation parameters by observing $\nu_\mu$ ($\bar{\nu}_\mu$) disappearance and $\nu_e$ ($\bar{\nu}_e$) appearance from a $\nu_\mu$($\bar{\nu}_\mu$) beam. The experiment has both near and far detectors situated at 280 m and 295 km respectively from the beam production target. The far detector...
In this paper, we present detailed studies for measuring the production cross sections and setting model independent limits on the anomalous magnetic and electric dipole moments $\tilde{a}_\tau$ and $\tilde{d}_\tau$ of the $\tau$-lepton, through the tau pair production channels $pp \to p\tau\bar \tau \gamma p$, $e^-p \to e^- \tau\bar \tau \gamma p$ and $e^+e^- \to e^+\tau\bar \tau \gamma e^-$...
Super-Kamiokande is a 50 ktons water Cherenkov Detector in Japan and has been operating from April 1996 thus accumulated 0.37 megaton-years exposure of data. One of the main physics topics of Super-Kamiokande experiment is searching for proton decay to test Grand Unified Theory. One of the three-body proton decay modes, charged lepton and two pion decay mode can be considered in a...
Heavy Neutral Leptons (HNLs) have been an interesting topic for experimental particle physics in the past few years.
A study has been performed within the framework of the multi-instrument DUNE near detector complex, specifically regarding the SAND muon tracker on-axis detector, to assess the sensitivity to HNL within six years of exposure.
The meson flux has been generated using Pythia8,...
In this paper, we present a QCD analysis to extract the Fragmentation Functions (FFs) of unidentified light charged hadron entitled as SHK22.h from high-energy lepton-lepton annihilation and lepton-hadron scattering data sets. This analysis includes the data from all available single inclusive electron-positron annihilation (SIA) processes and semi-inclusive deep-inelastic scattering (SIDIS)...
The future of high energy physics relies on the capability of exploring a broader energy range than current colliders, with higher statistics. The Muon Collider thus provides a unique possibility for combining these two aspects: as a leptonic machine it allows to take advantage of the nominal center of mass energy in the interaction. Moreover, the losses due to synchrotron radiation are...
The Standard Model theoretical prediction of the muon anomalous magnetic moment, $a_\mu = (g-2)_\mu /2$, presents a discrepancy of $4.2\sigma$ with respect to the combined Fermilab and BNL measurements.
The MUonE project is a recently proposed experiment at CERN that will help to shed light on this situation, by providing an independent determination of the leading order hadronic vacuum...
Collider experiments allow us to probe the spin state of fundamental particles in addition to their kinematics. Top quarks are unique candidates for spin polarization and spin correlation measurements and can be used for precision tests of the Standard Model.
Quantum information observables, like measures of entanglement, provide an additional handle to probe spin correlations. Entanglement...
A long-standing discrepancy in the soft photon bremsstrahlung has attracted a renewed attention in view of the proposed measurements with a future upgrade of the ALICE detector in the upcoming runs of the LHC. In this talk I will discuss the possibility to implement techniques that have been recently developed for soft gluon resummation at Next-to-Leading-Power (NLP) to the soft photon spectrum.
Dark matter captured by interaction with electrons inside the Sun may annihilate via long-lived mediators to produce observable gamma-ray signals. We utilize solar gamma-ray flux measurements from the Fermi Large Area Telescope and High Altitude Water Cherenkov observatory to put bounds on the dark matter electron scattering cross-section. We find that our limits are four to six orders of...
We review the status of anomalous triple gauge couplings in the light of the recent $(g-2)_\mu$ measurement at FNAL, the new lattice theory result of $(g-2)_\mu$ and the updated measurements of several $B$-decay modes. In the framework of SMEFT, three bosonic dimension-6 operators are invoked to parametrize physics beyond the Standard Model and their contributions to such low-energy...
The origin of neutrino masses remains shrouded in mystery. One of the possible scenarios is that neutrinos have Majorana masses, which leads to neutrinoless double-beta decay ($0\nu\beta\beta$). CANDLES is a project to search for the $0\nu\beta\beta$ events from ${}^{48}\mathrm{Ca}$, which has a relatively high Q$_{\beta\beta}$-value of $4.27\,$MeV among the known double beta decay nuclei. We...
One of the very interesting aspects of high energy heavy-ion collisions experiments is a detailed study of the thermodynamical properties of strongly interacting nuclear matter away from the nuclear ground state and many efforts were focused on searching for possible phase transitions in such collisions. In this investigation, we are going to explore the presence of thermodynamic instabilities...
The current era of Exascale computing brings ever growing demands on the amount of available computing performance, storage capacity and network throughput. This also affects the massive computing infrastructure for management of data produced by the experiments at the LHC, the Worldwide LHC Computing Grid (WLCG). The standard financing used for many years enabling the resource growth of 10 -...
We calculate for the first time the total decay widths of the charmed baryons including all the possible open-flavor decay channels using the 3P0 model. Our calculations consider the final states: the charmed baryon-(vector/pseudoscalar) meson pairs and the (octet/decuplet) baryon-(pseudoscalar/vector) charmed meson pairs, within a constituent quark model. Furthermore, we calculate the masses...
Hadronic atoms allow the investigation of strong hadron-nucleon interaction at low energy in nuclear physics. High precision light kaonic atoms X-ray spectroscopy represents a unique tool for performing experiments equivalent to scattering at vanishing relative energies. It aims to determine the antikaon-nucleus interaction at the threshold without the need for extrapolation to zero energy.
...
Antideutrons have never been observed in space. This presentation reviews studies of antideuterons using Alpha Magnetic Spectrometer on the International Space Station in the rigidity range from 1 to 10 GV.
The standard gas mixture for the Resistive Plate Chambers (RPC), composed of $C_{2}H_{2}F_{4}$/i- $C_{4}H_{10}$/$SF_{6}$, has a high Global Warming Potential (GWP ∼1430) mainly due to the presence of $C_{2}H_{2}F_{4}$. This gas is not recommended for industrial uses anymore, therefore it will be problematic to use it in the next future. We report the performance of the RPC working with new...
The High-Luminosity Large Hadron Collider (HL-LHC) is expected to deliver an integrated luminosity of up to 3000 fb-1 at sqrt{s} = 14 TeV. The very high instantaneous luminosity will lead to about 200 proton-proton collisions per bunch crossing (“pileup”) superimposed to each event of interest, therefore providing extremely challenging experimental conditions. CMS prospects on study of the HH...
Liquid scintillator is widely used as a medium for the detection of charged particles for numerous applications in science, medicine, and other areas. The composition of scintillator affects not only its performance, but also the cost of the components. The spectrum of the output scintillator light also affects what detectors can be used in conjuncture with this scintillator formula....
The Extreme Universe Space Observatory Super Pressure Balloon 2 (EUSO-SPB2) is an approved NASA balloon mission that is planned to fly in 2023 from Wanaka, NZ with target duration of up to 100 days. It is a pathfinder for the Probe of Extreme Multi-Messenger Astrophysics (POEMMA), a candidate for an Astrophysics probe-class mission. EUSO-SPB2 will consist of a Cherenkov telescope and a...
The Super-Kamiokande experiment (SK) is the water Cherenkov detector which discovered the oscillation of atmospheric neutrinos. The dominant effect of the oscillation of muon neutrinos is the appearance of tau neutrinos. Direct detection of $\nu_\tau$ in the atmospheric neutrino flux provides an unambiguous confirmation of neutrino oscillations. $\nu_\mu$ changing to $\nu_e$ is the...
In order to cope with the occupancy and radiation doses expected at the High-Luminosity LHC, the ATLAS experiment will replace its Inner Detector with an all-silicon Inner Tracker (ITk), containing pixel and strip subsystems. The strip subsystem will be built from modules, consisting of one n+-in-p silicon sensor, one or two PCB hybrids containing the front-end electronics, and one powerboard...
The BREAD Experiment [1] aims to use novel ultralow noise photosensors for detecting axions. The earliest stages of this experiment, expected to take first data in 2023, will involve a superconducting nanowire single-photon detector (SNSPD) to run pilot axion and dark photon searches using an existing cryostat previously used by ADMX. In preparation for this, we are working with the Berggren...
Researchers at IHEP have conceived two types of MCP-PMTs for the photon detection in the particle physics. One is the 20 inch Large MCP-PMT (LPMT) with small MCP units in the large area PMTs for the neutrino detection. This LPMT has already mass produced more 13K pieces for the JUNO, and also evaluated by the PMT group in LHAASO and HyperK. Another is the 2 inch Fast MCP-PMT (FPMT) with the...
After successfully completing the phase-I upgrades during the long-shutdown 2 of LHC, the ATLAS detector is now ready to take Run3 collision data, with several upgrades implemented. The most important and challenging being in the Muon Spectrometer, where the two forward inner muon stations have been replaced with the New Small Wheels (NSW) equipped with two completely new detector...
Many analyses in the ATLAS physics program are dependent on the identification of jets containing b-hadrons (b-tagging). The corresponding algorithms are referred to as b-taggers. The baseline b-taggers are optimized for jets containing one b-hadron. A new double b-tagging algorithm, the X->bb tagger, provides better identification efficiency to reconstruct boosted resonant particles decaying...
The High Luminosity Large Hadron Collider (HL-LHC) at CERN is expected to collide protons at a centre-of-mass energy of 14 TeV and to reach the unprecedented peak instantaneous luminosity of 7 x 10^34 cm^-2 s^-1 with an average number of pileup events of 200. This will allow the ATLAS and CMS experiments to collect integrated luminosities up to 4000 fb^-1 during the project lifetime. To cope...
After successful operation of the Precision Proton Spectrometer (PPS) since 2016, the CMS Collaboration has published an Expression of Interest to pursue the study of central exclusive production (CEP) events, pp --> pXp, at the High-Luminosity LHC (HL-LHC) with detection of the very forward protons. This talk will present the desired performance and the physics perspectives of a CMS near-beam...
As there are no known astrophysical sources of cosmic ray (CR) antiprotons, they represent a good channel for indirect dark matter search. The secondary antiproton background is produced in collisions between primary CRs and the interstellar medium (spallation). In the last decade, thanks to high precision measurements by AMS-02 and PAMELA, a possible tension between the observed antiproton...
Innovative experimental techniques are needed to further search for dark matter weakly interacting massive particles. The ultimate limit is represented by the ability to efficiently reconstruct and identify nuclear and electronic recoil events at the experimental energy threshold. Gaseous Time Projection Chambers (TPC) with optical readout are very promising candidates thanks to the 3D event...
The search for lepton creation and Majorana neutrinos with double-beta decays is about to enter
a new era. Several ton-scale experiments are in preparation to explore the full parameter space
allowed by theories predicting inverted-ordered neutrino masses. In this paper, we evaluate the
discovery probability of a combined analysis of such a multi-experiment endeavor assuming...
The polarized structure functions of 3He and 3H nucleuses are calculated in NLO approximation, considering and disregarding the light sea quark symmetry breaking. We employ the polarized structure function of the nucleons within the nucleus extracted from our two recent analysis on polarized DIS data and on polarized DIS+SIDIS data. Since the data of the second analysis cover a bigger range of...
The rates at which b- and c-quarks hadronize into different hadron species (i.e. the HF production fractions) may vary among MC Shower simulations such as Pythia, Sherpa, and Herwig. Furthermore, the flavor tagging efficiencies in ATLAS have been found to depend on the hadron species inside a jet. For example, flavor tagging efficiency for c-jets is the largest for D+ mesons and the lowest for...
We employ machine learning techniques to identify important features that distinguish jets produced in heavy-ion collisions from jets produced in proton-proton collisions [1]. We formulate the problem using binary classification and focus on leveraging machine learning in ways that inform theoretical calculations of jet modification: (i) we quantify the information content in terms of Infrared...
The Mu2e experiment at the Fermilab will search for a charged-lepton flavor violating neutrino-less conversion of a muon into an electron in the field of an aluminum nucleus, with a sensitivity improvement by a factor of 10,000 over existing limits.
The Mu2e Trigger and Data Acquisition System (TDAQ) uses \emph{otsdaq} framework as the online Data Acquisition System (DAQ)...
The long-standing tension between the Standard Model prediction and the measured value of the muon anomalous magnetic moment can be addressed by new physics in the TeV range. Simplified models provide a way of understanding concretely how the discrepancy is tackled, and make it possible to predict other observables corellated with the muon g-2. In this talk I will explore the predictions which...
The proton-proton collision rate at the High Luminosity LHC will impose significant challenges on the data acquisition system used to read out the CMS Muon Cathode-Strip Chambers (CSCs). These chambers are located in the endcap regions of the CMS detector, and those closest to the beam line encounter a particularly high particle flux. To address these issues, a major upgrade of the electronics...
The Pixel Luminosity Telescope is a silicon pixel detector dedicated to luminosity measurement at the CMS experiment. It consists of 48 silicon sensor planes arranged into 16 "telescopes" of three planes each, with eight telescopes arranged around the beam pipe at either end of the CMS detector, outside the pixel endcap at a distance of approximately 1.75 m from the interaction point. The...
Euclid is a European Space Agency mission on satellite, whose aim is to investigate the so-called “dark universe” (dark matter and dark energy) and strongly constrain the main cosmological parameters. In order to satisfy the scientific mission requirements, an extensive calibration procedure must be performed both on the ground and in flight.
The same source in the sky can be recorded with a...
Lithium chloride water solution is a good option for solar neutrino detection. The $\nu_e$ charged-current (CC) interaction cross-section on $\rm{{}^{7}Li}$ is evaluated with new B(GT) experimental measurements. The total CC interaction cross-section weighted by the solar $^8$B electron neutrino spectrum is $3.759\times10^{-42}~\rm{cm}^2$, which is about 60 times that of the neutrino-electron...
The SABRE (Sodium iodide with Active Background REjection) experiments aim to detect an annual rate modulation from dark matter interactions in ultra-high purity NaI(Tl) crystals in order to provide a model independent test of the signal observed by DAMA/LIBRA. The SABRE South experiment is located at the Stawell Underground Physics Laboratory (SUPL), Australia, and is partnered with SABRE...
DUNE is a next-generation of long baseline experiment for neutrino oscillation physics. The near detector (ND) complex aims at constraining the systematic uncertainties to ensure high precision measurements of neutrino oscillation parameters. The SAND apparatus is one of the three components of the ND permanently located on-axis to monitor the neutrino beam stability and measure its flux. SAND...
The REINFORCE EU project (Research Infrastructures FOR Citizens in Europe) engages and supports citizens to cooperate with researchers and actively contribute to the development of new knowledge for the needs of science and society.
REINFORCE offers four “discovery demonstrators” in different areas of physics. The infrastructure of all demonstrators is based on Zooniverse, the most popular...
The Jiangmen Underground Neutrino Observatory (JUNO) is a new generation of reactor based experiments located in the Guangdong province in China. This experiment offers a rich physics program and will bring significant contributions in many neutrino areas, in particular concerning the determination of the neutrino mass ordering and the measurement of the oscillation parameters at the percent...
Precision results on cosmic-ray electrons are presented in the energy range from 0.5 GeV to 2.0 TeV based on 50 million electrons collected by the Alpha Magnetic Spectrometer on the International Space Station. In the entire energy range the electron and positron spectra have distinctly different magnitudes and energy dependences. At medium energies, the electron flux exhibits a significant...
Transverse momentum ($p_{T}$) spectra of charged hadrons at mid-pseudorapidity in deformed Xe-Xe collisions at 5.44 Tev center-of-mass energy under the Monte Carlo HYDJET++ model (HYDrodynamics plus JETs) framework is reported. 0.15$
Event shape observables such as transverse spherocity($S_{0}$) have evolved as a
powerful tool to separate soft and hard contributions in an event in small collision
systems. To understand this phenomenon, we used two-particle differential-number
correlation functions, $R_{2}$, and transverse momentum correlation functions, $P_{2}$, of
charged particles produced in pp collisions at the LHC...
The High-Luminosity LHC will open an unprecedented window on the weak-scale nature of the universe, providing high-precision measurements of the Standard Model as well as searches for new physics beyond the standard model. The Compact Muon Solenoid (CMS) experiment is planning to replace entirely its trigger and data acquisition system to achieve this ambitious physics program. Efficiently...
The identification of jets containing b-hadrons, b-tagging, is critical for many ATLAS physics analyses. Its performance is measured in data and the simulation is corrected through simulation-to-data scale factors. However, such measurement only covers a certain jet pT range, so the b-tagging performance at higher pT must be evaluated via a simulation-based extrapolation method. This work...
We update our analysis of D meson mixing including the latest experimental results.
We also derive constraints on absorptive and dispersive CP violation by combining
all available data, and discuss future projections. We also provide posterior
distributions for observable parameters appearing in D physics.
The High-Luminosity Large Hadron Collider (HL-LHC) project aims to boost the performance of the LHC, augmenting the potential for discoveries and the accuracy of SM measurements. From the LHC Run-4 onwards, the upgrade aims at increasing the instantaneous luminosity of the machine, to target an overall ten-fold increase of the collected dataset compared to the LHC initial design. In order to...
We study the tensor mesons (J=2,3) within the low energy effective model approach of QCD. Effective model is based on the approximate symmetries of QCD Lagrangian. Results for the tree level hadronic and radiative decay rates of the tensor mesons are presented. Experimentally well-establishment of the tensor mesons enables us to compare our theoretical results to the ones in Particle Data...
We study the allowed parameter space of the scalar sector in the superweak extension of the standard model (SWSM). The allowed region is defined by the conditions of (i) stability of the vacuum and (ii) perturbativity up to the Planck scale, (iii) the pole mass of the Higgs boson falls into its experimentally measured range. The analysis uses two-loop renormalization group equations and...
The primary goal of JUNO is to resolve the neutrino mass hierarchy using precision spectral measurements of reactor antineutrino oscillations. To achieve this goal a precise knowledge of the unoscillated reactor spectrum is required in order to constrain its fine structure. To account for this, Taishan Antineutrino Observatory (TAO), a ton-level, high energy resolution liquid scintillator...
The associated production of a Higgs and a Z boson at the LHC receives an important contribution from the gluon-initiated channel $gg \rightarrow ZH$. Currently, exact analytic results for the NLO QCD corrections to this partonic process are not known, due to the presence of top-quark-mediated two-loop box diagrams in the virtual contribution. The inclusion of the gluon-initiated component at...
Diamond sensors (DS) are widely used as solid-state particle detectors, beam loss monitors, and dosimeters in high-radiation environments, e.g., particle colliders. We have calibrated our DS with steady $\beta$- and X-radiation, spanning a dose rate in the range 0.1-100 mGy/sec. Here, we report the first systematic characterization of transient responses of DS to collimated, sub-picosecond, 1...
Non-standard neutrino properties can modify the picture of neutrino decoupling from the cosmic plasma. We have calculated the impact on the contribution of neutrinos to the cosmological radiation density, parameterized via the effective number of neutrinos ($N_{\rm eff}$), for some particular cases, including the presence of neutrino non-standard interactions (NSI) with electrons or mixing...
Since the beginning of 2012, the Borexino collaboration has been reporting precision measurements of the solar neutrino fluxes emitted in the proton--proton chain and in the Carbon-Nitrogen-Oxygen cycle. The solar neutrino interaction rate time series exhibits the annual sinusoidal modulation due to the Earth's elliptical orbit. Other modulations could point to neutrino physics beyond the...
In this talk we present the most recent extraction of unpolarized transverse-momentum-dependent (TMD) parton distribution functions (PDFs) and TMD fragmentation functions (FFs) from global data sets of Semi-Inclusive Deep-Inelastic Scattering (SIDIS), Drell-Yan and Z boson production. The fit is performed at the N3LL logarithmic accuracy in the resummation of qT-logarithms and features...
In scenarios beyond the Standard Model (BSM) characterised by charged (W') or neutral (Z') massive gauge bosons with large width, resonant mass searches are not very effective, so that one has to exploit the tails of the mass distributions measured at the Large Hadron Collider (LHC). In this case, the LHC sensitivity to new physics signals is influenced significantly by systematic...
The Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) features a sophisticated two-level triggering system composed of the Level 1 (L1), instrumented by custom-design hardware boards, and the High Level Trigger (HLT), a software based trigger based on the complete event information and full detector resolution. The CMS L1 Trigger relies on separate calorimeter and muon...
The onset of the COVID pandemic in 2020 stopped all outreach and educational activities with in-person participation. The ALICE collaboration soon adapted to the new situation imposed by lockdowns and other restrictions. The multitude of online tools and platforms available allowed us to continue reaching out to the public. In-person visits and talks were replaced by virtual visits and...
The radiative and electroweak-penguin $B$ decays mediated via $b\to s\gamma$ and $b\to s\ell^+\ell^-$ transitions, respectively, are sensitive to new physics since new heavy particles can enter in the loop altering decay branching fractions and other kinetic observables. Search for the lepton-flavor violation and the test of lepton-flavor universality through these processes are also of...
The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) experiment explores with high sensitivity the parameter space of low mass DM candidates, being the pathfinder in the sub-GeV/c2 mass range. CRESST employs different high-purity crystals and operate them at mK temperature as cryogenic calorimeters. The flexibility in employing detectors made of different materials...
We show that a recently discovered non-perturbative field-theoretical mechanism giving mass to elementary fermions, is also capable of generating a mass for the electro-weak bosons and can thus be used as a viable alternative to the Higgs scenario. A detailed analysis of this remarkable feature shows that the non-perturbatively generated fermion and $W$ masses have the parametric form...
A new criterion to extend the Standard Model (SM) of particle physics is proposed: the symmetries of physical microscopic forces originate from the automorphism groups of main Cayley–Dickson algebras, from complex numbers to octonions and sedenions. This correspondence leads to a natural and minimal enlargement of the color sector, from a SU(3) gauge group to an exceptional Higgs-broken G(2)...
BULLKID is an R&D project on a new cryogenic particle detector to search for low energy processes such as low-mass dark matter and neutrino coherent scattering off nuclei. The detector unit we are building consists in an array of 60 silicon absorbers sensed by phonon-mediated, microwave-multiplexed Kinetic Inductance Detectors (KIDs), with energy resolution on nuclear recoils around 100 eV ...
International Masterclasses (IMC) is a program to engage high school students in authentic one-day particle physics analysis experiences at universities and laboratories worldwide. The program is run under the aegis of the International Particle Physics Outreach Group (IPPOG). The COVID pandemic created challenges for IMC in trying to reach the participants and excite them about cutting-edge...
We review recent CMS results on heavy flavour hadron production, including quarkonia, in heavy ion collisions.
Weak neutrino and antineutrino signals from astrophysical sources can be investigated with high sensitivity with large underground ultrapure liquid scintillators. The largest amount of detected antineutrinos at Earth is emitted in the natural radioactive decays by $^{40}$K and of $^{232}$Th and $^{238}$U chains isotopes, while supernovae explosions, gamma ray bursts, GW events and solar...
The ATLAS Trigger in Run 3 is expected to record on average around 1.7
kHz of primary 13.6 TeV physics data, along with a substantial
additional rate of delayed data (to be reconstructed at a later date)
and trigger-level-analysis data, surpassing the instantaneous data
volumes collected during Run 2.
Events will be selected based on physics signatures such as the presence
of energetic...
SENSEI (Sub-Electron Noise Skipper Experimental Instrument) is pioneering the development of silicon CCDs with sub-electron charge resolution for low-threshold direct detection of dark matter.
These "skipper CCDs" are the first detectors capable of resolving single electrons in each of millions of pixels, and the low thresholds possible with this technology give SENSEI world-leading...
The next generation water-Cherenkov detector, Hyper-Kamiokande (Hyper-K), is currently under construction in Japan and it is expected to be ready for data taking in 2027. Thanks to its huge fiducial volume and high statistics, Hyper-K will contribute to many investigations such as CP-violation, determination of neutrino mass ordering and potential observations of neutrinos from astrophysical...
The proposed high-luminosity high-energy Electron-Ion Collider (EIC) will provide a clean environment to precisely study several fundamental questions in the high energy and nuclear physics fields. A low material budget silicon vertex/tracking detector with fine spatial resolution (hit spatial resolution < 10 $\mu$m) is critical to carry out heavy flavor hadron and jet measurements at the...
Many new physics models, such as the Sequential Standard Model, Grand Unified Theories, models of extra dimensions, or models with eg. leptoquarks or vector-like leptons, predict heavy mediators at the TeV energy scale. We present recent results of such searches in leptonic final states obtained using data recorded by the CMS experiment at Run-II of the LHC.
An unexpected explanation for neutrino mass, Dark Matter (DM) and Dark Energy (DE) from genuine Quantum Chromodynamics (QCD) of the Standard Model (SM) is proposed here, while the strong CP problem is resolved without any need to account for fundamental axions. We suggest that the neutrino sector can be in a double phase in the Universe: i) relativistic neutrinos, belonging to the SM; ii)...
We present a new grand unification paradigm, where gauge couplings do not need to be equal at any give scale, instead they run towards the same fixed point in the deep ultraviolet. We provide a concrete example based on SU(5) with a compactified extra space dimension. By construction, fermions are embedded in different SU(5) bulk fields, hence baryon number is conserved and proton decay is...
Physics, especially Astroparticle and Nuclear Physics, is a complex theme to tell kids, because it is very far away from their everyday life and from traditional school subjects. Nevertheless, to answer the demand of materials to support distance learning during the pandemic, the INFN Communications Office widened its activities with interactive live streaming events and online workshops for...
The Parton Branching (PB) approach provides a way to obtain transverse momentum dependent (TMD) parton densities. Its equations are written in terms of splitting functions and Sudakov form factors and can be solved with Monte Carlo methods. Even though the transverse momentum is known in every branching, the PB method currently uses the DGLAP splitting functions, which assume that the parton...
Even though the LHC searches did not unveil the new physics particles so far, observations made at LHCb and the $B$-factories point towards lepton flavor universality violation in both tree-level and loop-induced $B$-meson semileptonic decays. A minimal solution to this problem is to combine two scalar leptoquarks (LQ) with $\mathcal{O}(1~\mathrm{TeV})$ masses. We will show that there are only...
Charmonium production is a probe sensitive to deconfinement in nucleus-nucleus collisions. The production of J/$\psi$ via regeneration within the QGP or at the phase boundary has been identified as an important ingredient for the description of the observed centrality and $p_{T}$ dependence at the LHC. $\psi$(2S) production relative to J/$\psi$ is one possible discriminator between the two...
The High-Luminosity LHC will open an unprecedented window on the weak-scale nature of the universe, providing high-precision measurements of the standard model as well as searches for new physics beyond the standard model. Such precision measurements and searches require information-rich datasets with a statistical power that matches the high-luminosity provided by the Phase-2 upgrade of the...
The DAMIC-M (DArk Matter In CCDs at Modane) experiment will use n-type Si skipper CCDs, fully depleted, with a total target mass of about one kilogram. Four individual silicon plates of 6k x 1.5k pixels will be placed in each holder making a total of around 200 CCDs. The skipper amplifier readout allows for several non-destructive measurements of the individual pixel charge, reducing the...
Modern HEP experiments are invested heavily in software. The success of physics discoveries hinges on software quality for data collection, processing, analysis, and the ability of users to learn and utilize it quickly. While each experiment has its own flavor of software, it is mostly derived from tools in the common domain. However, most users learn software skills only after joining a...
The ANTARES high-energy neutrino telescope has operated in its full configuration from May 2008 up to February 2022 with its detector lines anchored at 2500 below the surface of the Mediterranean Sea. The location of ANTARES allowed for an advantageous view of the Southern Sky through neutrino-induced upgoing muons, with a geometrical configuration optimized for neutrino of Galactic origin...
Azimuthal single- and double-spin asymmetries measured at Hermes in semi-inclusive leptoproduction of pions, charged kaons, protons, and antiprotons from a transversely polarized hydrogen target are presented. The results of a re-analysis of the previously published Collins and Sivers asymmetries, extended to include protons and antiprotons as well as an extraction in a multi-dimensional...
The Pierre Auger Observatory in Argentina, built to study the physics of highest-energy cosmic rays, has a tremendous emotional appeal given the Pampa Amarilla environment at 1400 m asl in Mendoza, coupled with the aura of a pioneering experiment that explores the Universe. Here, we present some of the Outreach, Education, and Communication programmes carried out within the international...
Future vertex detectors operating in colliders at very high instantaneous luminosity will face great challenges in the event reconstruction due to the increase in track density. In particular the high luminosity LHC phase, with the collider operating at 1.5x10$^{34}$/cm/s, will pose strict requirements on subdetectors capabilities. Concerning the LHCb Upgrade2, 2000 tracks from 40 pp...
Lattice simulations suggest that the spectrum of observable particles in BSM-like theories may be different than naively expected using standard methods.
We consider a GUT-like toy theory, which (despite its simplicity) shows qualitative discrepancies arising from non-trivial field theoretical effects, even at weak coupling.
These effects arise as an immediate consequence of the...
Many theories beyond the Standard Model predict new phenomena giving rise to multijet final states. These jets could originate from the decay of a heavy resonance into SM quarks or gluons, or from more complicated decay chains involving additional resonances that decay e.g. into leptons. Also of interest are resonant and non-resonant hadronic final states with jets originating from a dark...
Measurements of quarkonia production in peripheral and ultra-peripheral heavy-ion collisions are sensitive to photon-photon and photon-nucleus interactions, the partonic structure of nuclei, and to the mechanisms of vector-meson production. LHCb has studied both coherent and incoherent production of $J/\psi$ mesons in peripheral and ultra-peripheral collisions using PbPb data at forward...
Events with muons in the final state are fundamental for detecting a large variety of physics processes in the ATLAS Experiment, including both high precision Standard Model measurements and new physics searches. For this purpose, the ATLAS Muon Trigger has been designed and developed into two levels: a hardware based system (Level-1) and a software based reconstruction (High Level Trigger)....
Super-Kamiokande (SK) is the world's largest underground water Cherenkov detector which has been studying the atmospheric neutrino oscillations since 1996. Atmospheric neutrinos are famous for covering a wide energy range, have both neutrinos and antineutrinos, with electron and muon flavours, which oscillate to tau neutrinos and are sensitive for matter effects in the earth.
In this...
In recent years, digital object management practices to support findability, accessibility, interoperability, and reusability (FAIR) have begun to be adopted across a number of data-intensive scientific disciplines. These digital objects include datasets, AI models, software, notebooks, workflows, documentation, etc. With the collective dataset at the Large Hadron Collider scheduled to reach...
The lepton-jet momentum imbalance in deep inelastic scattering events offers a useful set of observables for unifying collinear and transverse-momentum-dependent frameworks for describing high energy Quantum Chromodynamics interactions. A recent first measurement was made [1] of this imbalance in the laboratory frame using positron-proton collision data recordedf with the H1 experiment at HERA...
The SN1987A core-collapse supernova was the first extragalactic transient source observed through neutrinos. The detection of the 25 associated neutrinos by the Super-Kamiokande, IMB and Baksan experiments marked the beginning of neutrino astronomy. Since then, neutrino telescopes have not been able to make another observation due to the remoteness of the sources. It is therefore essential to...
A supersymmetric extension of the Standard Model is presented, that results from the dimensional reduction of the $N=1$, $10D$ $E_8$ gauge group over a $M_4\times B_0/Z_3$ space, where $B_0$ is the nearly-Kaehler manifold $SU(3)/U(1)\times U(1)$ and $Z_3$ is a freely acting discrete group on $B_0$. The $4D$ theory -after the dimensional reduction and Wilson flux breaking- is an $N=1$...
Abstract:
Incom Inc is producing a standard version of the Large Area Picosecond Photo-Detector (LAPPD) – the world’s largest commercially-available planar-geometry photodetector based on microchannel plates (ALD-GCA-MCPs). It features a stacked chevron pair of “next generation” large area MCPs produced by applying resistive and emissive Atomic Layer Deposition (ALD) coatings to glass...
Many new physics models, e.g., compositeness, extra dimensions, extended Higgs sectors, supersymmetric theories, and dark sector extensions, are expected to manifest themselves in the final states with hadronic jets. This talk presents searches in CMS for new phenomena in the final states that include jets, focusing on the recent results obtained using the full Run-II data-set collected at the LHC.
The ANDROMeDa (Aligned Nanotube Detector for Research On MeV Darkmatter) project aims to develop a novel Dark Matter (DM) detector based on carbon nanotubes: the Dark-PMT. The detector is designed to be sensitive to DM particles with mass between 1 MeV and 1 GeV. The detection scheme is based on DM-electron scattering inside a target made of vertically-aligned carbon nanotubes. Carbon...
We will discuss the time-dependent analysis of $B\to P(S)\ell\ell$ taking into account the time evolution of the $B_{d}$ meson and its mixing into $\bar{B}_d$. The inclusion of time evolution allows us to identify six new observables.
We also show that these observables could be obtained by time-integrated measurements in a hadronic environment if flavour tagging is available.
We
provide...
Polarization and spin-alignment measurements represent an important tool for the understanding of the particle production mechanisms occurring in proton–proton collisions. When considering heavy-ion collisions, quarkonium polarization could also be used to investigate the characteristics of the hot and dense medium (quark-gluon plasma) created at the LHC energies. In ALICE, this observable was...
The performance of the Inner Detector tracking trigger of the ATLAS experiment at the LHC is evaluated for the data taking period of Run-2 (2015-2018). The Inner Detector tracking was used for the muon, electron, tau and b-jet triggers, and its high performance is essential for a wide variety of ATLAS physics programs such as many precision measurements of the Standard Model and searches for...
The KM3NeT collaboration is currently deploying two neutrino detectors at the bottom of the Mediterranean Sea: KM3NeT/ARCA, optimised for neutrino astronomy in the TeV to PeV range, and KM3NeT/ORCA, designed for GeV neutrino detection. The latter one is expected to be completed at the 2025 horizon with 115 string-like vertical Detection Units (DU) arranged in a cylindrical array. It will offer...
This talk presents results, recently obtained in the papers Eur. Phys. J. C 82 (2022) 36 [arXiv:2112.10465 [hep-ph]] and arXiv:2204.01528 [hep-ph], on azimuthal correlations in di-jet and Z+jet processes at large transverse momenta. The results are computed by matching Parton - Branching (PB) TMD parton distributions and showers with NLO calculations via MCatNLO. It is observed that the...
Large Area Picosecond Photodetectors (LAPPDs) are micro-channel based photosensors featuring hundreds of square centimeters of sensitive area in a single package and timing resolution on the order of 50 ps for a single photon detection. However, LAPPDs currently do not exist in finely pixelated 2D readout configurations that in addition to the high-resolution timing would also provide the...
The “flavor problem” represents one of the greatest challenges of particle model building since SM does not provide neither “a priori” explanation of the number of fermion generations nor on their mass and mixing patters, which appear to be very different in the lepton and quark sector. Discrete non-abelian symmetries have gathered a lot of attention as candidates for the solutions of the...
Leptoquarks are predicted by many new physics theories to describe the similarities between the lepton and quark sectors of the Standard Model and offer an attractive potential explanation for the lepton flavour anomalies observed at LHCb and flavour factories. The ATLAS experiment has a broad program of direct searches for leptoquarks, coupling to the first-, second- or third-generation...
The NEWS-G collaboration is searching for light dark matter using spherical proportional counters. Access to the mass range from 50 MeV to 10 GeV is enabled by the combination of low energy threshold, light gaseous targets (H, He, Ne), and highly radio-pure detector construction. Initial NEWS-G results obtained with SEDINE, a 60 cm in diameter spherical proportional counter operating at the...
The global feature extractor (gFEX) is a component of the Level-1 Calorimeter trigger Phase-I upgrade for the ATLAS experiment. This new high-speed electronics system is intended to identify patterns of energy associated with the hadronic decays of high momentum Higgs, W, & Z bosons, top quarks, and exotic particles in hard real time at the LHC crossing rate. The single board is packaged in an...
We study the polar and azimuthal decay angular distributions of $J/\psi$ mesons produced in semi-inclusive, deep-inelastic electron-proton scattering. For the description of the quarkonium formation mechanism, we adopt the framework of NRQCD, with the inclusion of the intermediate color-octet channels that are suppressed at most by a factor $v$ in the velocity parameter $v$ relative to the...
We propose that the electroweak and flavour quantum numbers of the Standard Model (SM) could be unified at high energies in an SU(4)×Sp(6)L×Sp(6)R anomaly-free gauge model. All the SM fermions are packaged into two fundamental fermion fields, thereby explaining the origin of three families. The SM Higgs, being electroweakly charged, necessarily becomes charged also under flavour when embedded...
The Pierre Auger Observatory is the world's largest ultra-high-energy cosmic ray observatory. Its hybrid detection technique combines the observation of the longitudinal development of extensive air showers and the lateral distribution of particles arriving at the ground. In this contribution, a review of the latest results on hadronic interactions using measurements from the Pierre Auger...
Upcoming neutrino experiments will not only constrain oscillation parameters with an unprecedented precision, but also will search for physics beyond the Standard Model. KM3NeT/ORCA is an atmospheric neutrino detector currently under construction, sensitive to energies from a few GeV to around 100 GeV and with a great potential to explore new physics. A high-purity neutrino sample from data...
Many new physics models predict low mass resonances. However, the kinematic thresholds used in the nominal data taking program of CMS pose a difficulty in kinematically accessing these resonances. To overcome this problem, CMS has implemented Data Scouting Techniques that allow trigger thresholds to be lowered by saving a very limited amount of trigger-level event information offline. In this...
Nearly all physics analyses at CMS rely on precise reconstruction of particles from their signatures in the experiment’s calorimeters. This requires both assignment of energy deposits to particles and recovery of various properties across the detector. These tasks have traditionally been performed by classical algorithms and BDT regressions, both of which rely on human-engineered high level...
The LHCb experiment collected the world's largest sample of charmed hadrons during LHC Run 1 and Run 2. With this data set, LHCb is currently providing the world's most precise measurements of properties of charmed hadrons, as well as discovering many previously unobserved states. This talk reports on measurements of excited charm(-strange) mesons in amplitude analyses of beauty mesons...
The next generation undersea neutrino telescopes of KM3NeT continue to grow on the bottom of the Mediterranean Sea and so does their potential to make exciting discoveries. The larger of the two detec-tors, KM3NeT/ARCA, is located 3.5 km underwater, 80 km off shore Portopalo di Capo Passero in Ita-ly. Its planned size of one cubic kilometre and unprecedented depth are both linked to its core...
The production of quarkonia in hadronic collisions provides a unique testing ground for understanding quantum chromodynamics (QCD) since it involves both the perturbative and non-perturbative regimes of this theory. As the quarkonia formation is not yet fully understood, a variety of new experimental data serve as new insights and help to constrain the models. Additionally to the inclusive...
Euclid is a mission of the European Space Agency designed to constrain the properties of dark energy and gravity via weak gravitational lensing and galaxy clustering. It will carry out a wide area imaging and spectroscopy survey (the Euclid Wide Survey: EWS) in visible and near- infrared bands, covering approximately 15 000 deg2 of extragalactic sky in six years. Euclid will be equipped with a...
The plans for LHCb upgrade II in the HL LHC era include complementing the experiment’s particle ID capabilities in the low momentum region up to 10-15 GeV with the novel TORCH time of flight detector. TORCH is designed to provide 15 ps timing resolution for charged particles, resulting in K/pi (p/K) particle identification up to 10 (15) GeV/c momentum over a 10 m flight path. Cherenkov...
COSINE-100 is a NaI-based dark matter detection experiment based at the Yangyang Underground Laboratory in South Korea. By searching for an annual modulation signal in NaI crystals, COSINE-100 aims to provide a model-independent test of the long-standing but contested positive dark matter signal from experiments by the DAMA collaboration using the same target material and search method. In...
At the latest European strategy update in 2020 it has been highlighted that the next highest-priority collider should be an $e^+e^-$ Higgs factory with a strong focus on precision physics. Particle identification will be an essential tool for such precision measurements to utilise clean event environment and push event reconstruction to its full potential. A recent development of the...
Euclid will observe 15,000 deg2 of the darkest sky that is free of contamination by light from our Galaxy and our Solar System. Three “Euclid Deep Fields” covering around 40 deg2 in total will be also observed extending the scientific scope of the mission the high-redshift universe. The complete survey represents hundreds of thousands images and several tens of Petabytes of data. About 10...
In 2018, the CMS Collaboration decided to start releasing 500-1000 word popular science articles that describe the collaboration's scientific publications. This talk summarises the experience and impact of the CMS briefings effort.
The suppression of bottomonium states is closely related to the interaction with the QGP, supposedly created in heavy ion (AA) collisions. The different binding energies of bottomonium states provide a unique pattern of yield modification which is useful to study thermal properties of the QGP. Previous results from CMS have shown the evidence of sequential suppression for $\Upsilon$(1S),...
We have studied the hierarchy sensitivity of Protvino to ORCA (P2O) experiment in standard three flavor oscillation and in the presence of NSI. As P2O has a baseline of 2595 km, it is expected that P2O should have better sensitivity to mass hierarchy and NSI compared to the DUNE experiment. Despite having higher appearance events in minimal P2O than DUNE, we noticed that it has less...
We present MadFlow, a python-based software for the evaluation of cross sections utilizing hardware accelerators.
The pipeline includes a first stage where the analytic expressions for matrix elements are generated by the MG5_aMC@NLO framework (taking advantage of its great flexibility) and exported in a vectorized device-agonstic format using the TensorFlow library or a device specific...
Results are presented on LF(U)V tests through precise measurements of decays involving heavy mesons and leptons, which are compared to the standard model predictions. The measurements use 13 TeV pp collision data collected by the CMS experiment at the LHC.
The upgraded LHCb detector will take data at a five times higher instantaneous luminosity. In this talk we will cover the performance of the all-new tracking detectors and demonstrate how their improved granularity helps the LHCb Upgrade not only maintain but improve on the previous LHCb detector performance in many key areas. We also cover the particle identification performance for hadrons...
The SABRE project aims to produce ultra-low background NaI(Tl) scintillating detectors to carry out a model-independent search for dark matter through the annual modulation signature, with an unprecedented sensitivity to confirm or refute the DAMA/LIBRA claim. The ultimate goal of SABRE is to operate two independent NaI(Tl) crystal arrays located in the northern (SABRE North) and southern...
Conventional doubly heavy hadrons, including quarkonium, are good probe for the non-perturbative regime of QCD, thus important to improve our understanding of the strong interaction. The LHCb experiment is dedicated to heavy flavour physics. The large heavy hadron dataset and excellent performance of the detector make it an ideal laboratory for studies of doubly heavy hadrons. The talk...
A 51-kiloton magnetised Iron Calorimeter (ICAL) detector, using Resistive Plate Chambers (RPCs) as active detector elements, aims to study atmospheric neutrinos. It will be the flagship experiment at the India-based Neutrino Observatory (INO) which is proposed to be housed in a cavern at the end of a 2 km tunnel in a mountain near Pottipuram (Tamil Nadu). A prototype - 1/600 of the weight of...
The proposed MATHUSLA experiment (MAssive Timing Hodoscope for Ultra-Stable neutraL pArticles) could open a new avenue for discovery of Physics Beyond the Standard Model at the LHC. The large-volume detector will be placed above the CMS experiment with O(100) m of rock separation from the LHC interaction point. It is instrumented with a tracking system to observe long-lived particle decays...
Twenty years ago an ambitious and ground breaking project was born within the INFN community with the aim to popularize physics using a web portal.
In these years students and the lay public were engaged with the hottest topics of modern research in particle and nuclear physics, astroparticle and theoretical physics.
Since the beginning, “ScienzaPerTutti” (*) has evolved in many different...
In recent years, compute performances of GPUs (Graphics Processing Units) dramatically increased, especially in comparison to those of CPUs (Central Processing Units). GPUs are nowadays the hardware of choice for scientific applications involving massive parallel operations, such as deep learning (DL) and Artificial Intelligence (AI) workflows. Large-scale computing infrastructures such as...
IceCube’s discovery of astrophysical neutrinos, and subsequent characterization of their energy spectrum up to a few PeV, has provided a new window into the high-energy Universe. However, many opportunities for discovery remain; low sample sizes still plague measurements of astrophysical neutrinos above 1PeV, and flavor measurements are challenging due to the difficulty in differentiating tau...
The large data sample accumulated by the Belle experiment at KEKB asymmetric energy $e^{+}e^{-}$ collider provides an important opportunities to study charmonium(-like) and bottomonium(-like) states. We report new results on $X(3872)$ decays to $J/\psi\omega$ and $\pi^+\pi^-\pi^0$ final states, as well as other studies on charmonium. Belle data taken with an energy scan around the...
From 2022 the LHCb experiment will use a triggerless readout system collecting data at an event rate of 30 MHz and a data rate of 4 Terabytes/second. A software-only High Level Trigger will enable unprecedented flexibility for trigger selections. During the first stage (HLT1), track reconstruction and vertex fitting for charged particles enable a broad and efficient selection process to reduce...
Today, the situation in direct dark matter detection is puzzling: the DAMA/LIBRA experiment observes an annual modulation signal at high statistical significance and fitting to the expectation of a cold dark matter halo in the milky way. However, in the so-called standard scenario on dark matter halo and dark matter interaction properties, the DAMA/LIBRA signal contradicts the null-results of...
Baryon Acoustic Oscillations (BAO) are one of the most useful and used cosmological probes to measure cosmological distances independently of the underlying background cosmology. However, in the current measurements, the inference is done using a theoretical clustering correlation function template where the cosmological and the non-linear damping parameters are kept fixed to fiducial LCDM...
Serendipitously discovered by the BATSE mission in the nineties, Terrestrial Gamma-ray Flashes (TGFs) represent the most intense and energetic natural emission of gamma rays form our planet. TGFs consist of sub-millisecond bursts of gamma rays (energy up to one hundred MeV) generated during powerful thunderstorms by lightenings (average ignition altitude of about 10 km) and are in general...
For more than a decade the current generation of CPU-based matrix element generators has provided hard scattering events with excellent flexibility and good efficiency.
However, they are a bottleneck of current Monte Carlo event generator toolchains, and with the advent of the HL-LHC and more demanding precision requirements, faster matrix elements are needed, especially at intermediate to...
Many models beyond the standard model predict new particles with long lifetimes, such that the position of their decay is measurably displaced from their production vertex, and particles giving rise to other non-conventional signatures. We present recent results of searches for long-lived particles and other non-conventional signatures obtained using data recorded by the CMS experiment at...
This seminar presents the ASIMOV Prize for scientific publishing, born in Italy in 2016.
The Prize aims to bring the young generations closer to scientific culture, through the critical reading of popular science books. The books are selected by a committee that includes scientists, professors, Ph.D. and Ph.D. students, writers, journalists and friends of culture, and most importantly, over...
NEXT-100 is a neutrinoless double beta decay experiment located at the Canfanc Underground Laboratory and is due to start commissioning in Summer 2022. The experiment employs a high-pressure gas time projection chamber consisting of 100 kg of enriched Xe-136 and is capable of achieving sub-percent energy resolution FWHM at the decay energy as well as background rejection through calorimetry...
Quarkonium production is a direct probe of deconfinement in heavy-ion collisions. For J/$\psi$, a bound state of $c\bar{c}$ quarks, the (re-)generation is found to be the dominant production mechanism at low transverse momentum ($p_{T}$) and in central collisions at the LHC energies.
In addition, the non-prompt component of J/$\psi$ production from b-hadron decays allows one to access the...
In this talk I will introduce a minimal extension of the Standard Model (SM) featuring two leptoquarks: a doublet with hypercharge 1/6 and a singlet with hypercharge 1/3. Such a particle content is well motivated by what I denote as flavoured-unified theories where families and forces are gauge interactions treated in the same footing. The presence of such a pair of leptoquarks induces...
LHCb's second level trigger, deployed on a CPU server farm, not only selects events but performs an offline-quality alignment and calibration of the detector and uses this information to allow physics analysts to deploy essentially their full offline analysis level selections (including computing isolation, flavour tagging, etc) at the trigger level. This “real time analysis” concept has also...
The NEXT (Neutrino Experiment with a Xenon TPC) collaboration aims at the sensitive search of the neutrino-less double beta decay ($\beta\beta0\nu$) of 136Xe at the Laboratorio Subterraneo de Canfranc (LSC). The observation of such a lepton-number-violation process would prove the Majorana nature of neutrinos, providing also handles for an eventual measurement of the neutrino absolute mass. A...
The synergy between gravitational wave (GW) experiments and large galaxy surveys such as the Dark Energy Spectroscopic Instrument (DESI) is most prominent in the standard siren method, which has already enabled several measurements of the Hubble Constant. A standard siren analysis was performed using the only GW event with an electromagnetic counterpart, GW170817, for the first time. We have...
Hyper-Kamiokande (HK) will be a next generation water Cherenkov detector capable of measuring neutrino interactions with unprecedented statistical precision. Discriminating candidate neutrino interactions from cosmic-ray muons and low-energy backgrounds is dependent upon constructing an effective Outer Detector (OD). The baseline design proposes deploying up to ten thousand 3-inch...
Various theories beyond the Standard Model predict new, long-lived particles with unique signatures which are difficult to reconstruct and for which estimating the background rates is also a challenge. Signatures from displaced and/or delayed decays anywhere from the inner detector to the muon spectrometer, as well as those of new particles with fractional or multiple values of the charge of...
Extracting scientific results from high-energy collider data involves the comparison of data collected from the experiments with “synthetic” data produced from computationally-intensive simulations. Comparisons of experimental data and predictions from simulations increasingly utilize machine learning (ML) methods to try to overcome these computational challenges and enhance the data analysis....
Despite great efforts to directly detect dark matter (DM), experiments so far have found no evidence. The sensitivity of direct detection of DM approaches the so-called neutrino floor below which it is hard to disentangle the DM candidate from the background neutrino. One of the promising methods of overcoming this barrier is to utilize the directional signature that both neutrino- and...
LHCb has recorded the largest sample of charm hadrons during Run 1 and Run 2 of the LHC (2011--2018). With these data, amplitude analyses of samples of unprecedented size are possible. Recent results of charm hadrons decays are shown.
IceCube-Gen2 is a proposed high energy extension of IceCube that would expand the high energy neutrino sensitivity by an order of magnitude. IceCube, located at the South Pole, is the world's largest neutrinos telescope. The IceCube-Gen2 optical array has a planned instrumented volume of 7.9 km^3, 8 times larger than that of IceCube, and will deploy 9,600 modules in 120 new strings with 240 m...
Dilatons (and moduli) couple to the masses and coupling constants of ordinary matter, and these quantities are fixed by the local value of the dilaton field. If, in addition, the dilaton with mass $m_\phi$ contributes to the cosmic dark matter density, then such quantities oscillate in time at the dilaton Compton frequency. We show how these oscillations lead to broadening and shifting of the...
The NEXT collaboration is pursuing a phased program to search for neutrinoless double beta decay (0nubb) of 136Xe using high pressure xenon gas time projection chambers. The power of electroluminescent xenon gas TPCs for 0nubb derives from their excellent energy resolution (<1%FWHM), and the topological classification of two electron events, unique among scalable 0nubb technologies. Xenon...
The Front-End Link eXchange (FELIX) system is a new ATLAS DAQ component designed to meet the evolving needs of detector readout into the High-Luminosity LHC era. FELIX acts as the interface between the data acquisition; detector and trigger timing and systems; and new or updated trigger and detector front-end electronics. FELIX also routes data between custom serial links from front-end...
The idea of diquarks as effective degrees of freedom in QCD has been a successful concept in explaining observed hadron spectra. Recently they have also played an important role in studying doubly heavy tetraquarks in phenomenology and on the lattice. The first member of this family of hadrons is the $T_{CC}$, newly discovered at LHCb.
Despite their importance, the colored nature of diquarks...
The CYGNUS proto-collaboration aims to establish a Galactic Directional Recoil Observatory at the ton-scale that could test the DM hypothesis beyond the Neutrino Floor and measure the coherent and elastic scattering of neutrinos from the Sun and possibly Supernovae. A unique capability of CYGNUS will be the detailed measurement of topology and direction of low-energy nuclear and electron...
Recent experimental measurements display an enhanced production of charmed baryons in high-energy nucleus-nucleus collisions. Quite surprisingly the same is found in proton-proton collisions, in which the relative yields of charmed baryons do not agree with the expectations based on e+e- collisions and with the predictions of those QCD event generators in which the hadronization stage is tuned...
PandaX-4T is a large-scale multi-purpose experiment currently taking data at China Jin Ping underground Laboratory. Besides dark matter direct detection, the detector can be used to detect double beta decay of Xe-136 and neutrinos from the Sun with 4T of natural xenon in the active volume. In this talk, we will present the status of PandaX-4T’s current data taking, analysis effort to extend...
The nEXO experiment is a proposed next-generation liquid xenon experiment to search for neutrino-less double beta decay ($0\nu\beta\beta$) of $^{136}$Xe. The experiment will use a 5-tonne liquid xenon monolithic time projection chamber enriched to 90% $^{136}$Xe. Ionization electrons and scintillation photons from energy deposits in the detector will recorded by a segmented anode and a large...
Recent CMS measurements of rare B0s meson properties are discussed, including the branching fractions and effective lifetimes. The studies are based on the data collected in pp collisions with sqrt(s) = 13 TeV with the CMS experiment at the LHC.
Primordial Gravitational Waves (GWs) are a unique tool to explore the physics and the microphysics of the early Universe. After the GW detections by the LIGO/Virgo collaboration the next target of modern cosmology is the detection of the stochastic background of GWs. Even if the main probe of primordial GWs is the Cosmic Microwave Background, we will see in this talk how we can extract...
Hadronic resonances having short lifetimes are very useful to study the hadron-gas phase that characterizes the late-stage evolution of high energy nuclear collisions. Indeed, regeneration and rescattering processes occurring in the hadron gas modify the measured yields of hadronic resonances and can be studied by measuring resonance yields as a function of system size and by comparing to...
The laboratory section included with the introductory Physics and Astronomy courses provide a student with the practical experience and initial laboratory skills that would be further honed by higher level courses. The quality and variety of that experience as well as the practical applicability are important.
Since the start of the current pandemic and restrictions on lab sessions (later...
Where do we want to go? Learning from research, recommendations, experience
DEAP-3600 is a WIMP dark matter direct-detection experiment located 2 km underground at SNOLAB near Sudbury, Ontario in Canada, which uses liquid argon as the target material. The detector consists of 3.3 tonnes of liquid argon in a large acrylic cryostat instrumented with 255 photomultiplier tubes. This experiment has set the most stringent limits in argon for WIMP-nucleon spin-independent...
The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for 0νββ decay that has been able to reach the one-tonne mass scale. The detector, located at the LNGS in Italy, consists of an array of 988 TeO2 crystals arranged in a compact cylindrical structure of 19 towers. CUORE began its first physics data run in 2017 at a base temperature of...
Machine Learning algorithms are playing a fundamental role in solving High Energy Physics tasks. In particular, the classification of hadronic jets at the Large Hadron Collider is suited for such types of algorithms, and despite the great effort that has been put in place to tackle such a classification task, there is room for improvement. In this context, Quantum Machine Learning is a new...
Many exotic resonances have been recently observed at the LHC and other experiments. In this report, CMS studies of exotic multiquark states are reported using the data collected in pp collisions at sqrt(s) = 13 TeV.
Axion-like particles (ALPs) are at the forefront of physics research, especially at the intensity frontier, dealing with light weakly coupled particles. A plethora of different experiments searches for signals of the ALP in many different final states using innovative search strategies. We present a different perspective on ALP searches, concentrating on the modifications that such a particle...
During Run 3, the LHC will deliver instantaneous luminosity in the range 5 x 10^34 cm^-2 s^-1 to 7 x 10^34 cm^-2 s^-1. To cope with the high background rates and to improve the trigger capabilities in the forward region, the muon system of the CMS experiment has been upgraded with two new stations of detectors (GE1/1), one in each endcap, based on triple-GEM technology. The system was...
Recent results from the proton-proton collision data taken by the ATLAS experiment on exotic resonances will be presented. A search for $J/\psi\ p$ resonances in $\Lambda_b \to J/\psi\ p K$ decays with large $pK$ invariant masses will be reported. Studies of $Z_c$ states in $B$-meson decays with the Run 2 data at 13 TeV will also be discussed. Searches for exotic resonances in 4 muon final...
The communities of astrophysics, astronomers and high energy physicists have been pioneers in establishing Virtual Research and Learning Networks (VRLCs)[1] generating international productive consortiums in virtual research environments and forming the new generation of scientists. In this talk we will discuss one in particular: LA-CoNGA Physics (Latin American alliance for Capacity buildiNG...
We consider the experimental data on yields of protons, strange Λ’s, and multistrange baryons (Ξ, Ω), and antibaryons production on nuclear targets, and the experimental ratios of multistrange to strange antibaryon production, at the energy region from SPS up to LHC, and compare them to the results of the Quark-Gluon String Model calculations. In the case of heavy nucleus collisions, the...
Clustering is one of the most frequent problems in many domains, in particular, in particle physics where jet reconstruction is central in experimental analyses. Jet clustering at the CERN's Large Hadron Collider is computationally expensive and the difficulty of this task is expected to increase with the upcoming High-Luminosity LHC (HL-LHC).
In this work, we study the case in which quantum...
Many extensions of the Standard Model include the possibility of light new particles, such as axions candidates. These scenarios can be probed using the large data sets collected by $B$-factories, complementing measurements performed at the LHC. We report on a search for an Axion-like particle (ALP), $a$, produced in the Flavor-Changing Neutral-Current decay $B\to K a$, with $a\to...
The DUNE experiment is a future long-baseline neutrino oscillation experiment aiming at measuring the neutrino CP violation and establishing the neutrino mass hierarchy, as well as at a rich physics programme from supernovae over low-energy physics to beyond standard model searches.
The baseline technology for the first far detector is a proven single-phase horizontal drift liquid Argon TPC...
The persistent hints of LFU violation in $b \to s \ell \ell$ may imply an existence of leptoquarks close to the TeV scale that couple to $b\mu$ and $s\mu$. These leptoquark Yukawa couplings can in full generality be complex and thus provide a new source of CP violation. We show that a large CP phase with a definite sign is perfectly viable for an $S_3$ leptoquark of mass below a few TeV,...
After Run 3, the Large Hadron Collider (LHC) will be upgraded to its High Luminosity phase (HL-LHC). The triggering capabilities in the forward region of the CMS detector will be enhanced to accommodate the dramatic increase in collision rate. New stations of triple-layer Gas Electron Multiplier (GEM) detectors will be installed in the endcap regions of the CMS muon system. The first set of...
The GERmanium Detector Array (GERDA) experiment searched for the lepton-number-violating neutrinoless double-β (0νββ) decay of 76Ge. Observing such a decay would allow to shed light onto the nature of neutrinos and its discovery would have far-reaching implications in cosmology and particle physics. By operating an array of high purity bare germanium detectors, enriched in 76Ge, in an active...
Art & Science across Italy is an INFN/CERN project for the Italian High School students (16-18 y.o.). More than 10.000 students joined since the 2016.
Creativity and vision capability are common to many disciplines and are involved in artistic and scientific thinking and activities. Scientists and artists are often asked to see and think beyond the perceivable reality, to imagine aspects of...
The ability of identifying and discriminating electronic and nuclear recoil events at the experimental low energy threshold represents the main limitation of the modern dark matter direct detection experiments. In this context, the gaseous Time Projection Chambers (TPCs) with optical readout are a promising and innovative technique. Thanks to the high granularity and sensitivity of the latest...
Observational constraints and prospects for detection of features, i.e. physically motivated oscillations in the primordial power spectrum, have so far concentrated on the CMB and Large Scale Structure surveys. Probing these features could, for instance, establish the existence of heavy particles beyond the reach of terrestrial experiments, and even test the inflationary paradigm or point to...
The discoveries of meson-like exotic states have been attracting huge interest from the hadron physics community. Studies on their spectroscopy can deepen our understanding of the internal structure and dynamics of hadrons. The LHCb experiment has been making significant contributions to such studies thanks to the large dataset provided by LHC and the delicate design of the detector. This talk...
In the recent years ALICE has carried out many measurements of the production of light nuclei in pp and p-Pb collisions and at different energies. A clear dynamics with multiplicity arises when combining all these measurements, however the theory interpretation of this evolution is still debated. In this presentation, the measurements of the ratio between the production yields of nuclei and...
We present Qibo, a new open-source framework for fast evaluation of quantum circuits and adiabatic evolution which takes full advantage of hardware accelerators, quantum hardware calibration and control, and large codebase of algorithms for applications in HEP and beyond. The growing interest in quantum computing and the recent developments of quantum hardware devices motivates the development...
Very rare B-meson decays, in particular Flavour-Changing Neutral-Current processes of the type B(s)-> l+ l-, are an excellent tool to search for New Physics, as they provide a clear experimental signature and they can be predicted very precisely in the Standard Model. Latest measurements of these processes using the large sample of beauty-hadron decays collected by the LHCb experiment during...
GENERA Network originated from the EU-funded GENERA project, which was supporting physics research organisations in their efforts to enhance gender equality in the time from September 2015 until August 2018. The network could be continuously expanded to currently 41 organisations from all over Europe. GENERA Network is based on a Memorandum of Understanding and invites interested institutions...
The High Luminosity LHC (HL-LHC) program will pose a great challenge for the different components CMS Muon Detector. Existing systems, which consist of Drift Tubes (DT), Resistive Plate Chambers (RPC) and Cathode Strip Chambers (CSC), will have to operate at 5 times larger instantaneous luminosity than designed for, and, consequently, will have to sustain about 10 times the original LHC...
XENONnT is a dark matter direct detection experiment located at the INFN Laboratori Nazionali del Gran Sasso. The core detector is a dual-phase time projection chamber (TPC) filled with 5.9 t of liquid xenon and instrumented with a total of 494 photomultiplier tubes (PMTs).
The TPC is installed in the center of a stainless steel tank filled with 700 t of water, which provides effective...
It is well known that the Sun represents an efficient and intense source of axions. We aim to study such axions and analyze their properties using the terrestrial neutrino oscillation experiment JUNO. We consider the Compton conversion, axions decay to the photon, and inverse Primakoff conversion processes in order to analyze the axion detection signatures. In this talk, will be presented a...
FLArE is a Liquid Argon Time Projection Chamber (LArTPC) based experiment designed to detect very high-energy neutrinos and search for dark matter at the Large Hadron Collider at CERN. It will be located in the proposed Forward Physics Facility, 620 m from the ATLAS interaction point in the far-forward direction, and will collect data during the High-Luminosity LHC era. With a fiducial mass of...
Machine-Learned Likelihood (MLL) is a method that combines the power of current machine-learning techniques to face high-dimensional data with the likelihood-based inference tests used in traditional analyses. MLL allows estimating the experimental sensitivity in terms of the statistical signal significance through a single parameter of interest, the signal strength. Here we extend the MLL...
KamLAND-Zen searches for neutrinoless double beta (0nbb) decay with Xe-136 loaded liquid scintillator (LS). 0nbb decay violates lepton number conservation and it requires two characteristic neutrino properties; non-zero mass and Majorana nature of the neutrino. Assuming the minimal mechanism of the decay, it would constrain the neutrino mass hierarchy and mass scale.
After successful...
Primordial black holes constitute an attractive dark matter candidate. I will discuss several new observational signatures for primordial black holes spanning orders of magnitude in mass, connecting them to gravitational wave and multi-messenger astronomy as well as long-standing astrophysical puzzles such as the origin of heavy elements.
The discovery of pentaquark candidates at LHCb in 2015 led to a renaissance of exotic hadron spectroscopy. There is yet no consensus on the nature of pentaquarks, calling for further experimental efforts. The large dataset and excellent detector performance give the LHCb experiment unprecedented capability in such study. In this talk, the latest results on pentaquark study from LHCb will be discussed.
The remarkable similarity in the creative processes of science and art provides a unique basis for innovative collaborations between particle physics and fine art developing approaches to enthuse young people regarding STEAM subjects.
“The Sketchbook and the Collider'' is an art|science collaboration and it has developed into an evolving, travelling package of art exhibitions and...
The rapidity dependence of particle production contains information on the partonic structure of the projectile and target and is, in particular at LHC energies, sensitive to non-linear QCD evolution in the initial state. At LHC, collision final states have been mainly studied in the central kinematic region, however, there is a rich opportunity for measurements in the forward direction, which...
The description of the dynamics behind baryonic decays of heavy flavoured particles is very challenging from the theoretical point of view. The branching ratio enhancement close to the p-pbar threshold in multibody decays and the suppression of the branching fractions to two-body final states are very interesting features of these processes. In this presentation, the most recent results of...
Multivariate techniques and machine learning models have found numerous applications in High Energy Physics (HEP) research over many years. In recent times, AI models based on deep neural networks are becoming increasingly popular for many of these applications. However, neural networks are regarded as black boxes- because of their high degree of complexity it is often quite difficult to...
The history of neutrino physics has been profoundly marked by the use of transparent liquid scintillator (LS) detectors. Their application in reactor and solar neutrino physics led to the discovery and the study of many fundamental properties of the elusive neutrinos. Despite all these successes and many decades of R&D, particle identification (PID) remains a weak point for this technology. In...
The muon spectrometer of the ATLAS detector has recently undergone a major upgrade in preparation for operation under experimental conditions foreseen at the High-Luminosity LHC (HL-LHC). Two New Small Wheels (NSW) have been constructed and installed to replace the first muon stations in the high-rapidity regions of ATLAS detector. This new system is designed to provide improved muon trigger...
The proposed LUXE experiment (LASER Und XFEL Experiment) at DESY, Hamburg, using the electron beam from the European XFEL, aims to probe QED in the non-perturbative regime created in collisions between high-intensity laser pulses and high-energy electron or photon beams. This setup also provides a unique opportunity to probe physics beyond the standard model. In this talk we show that by...
Using a scan sample taken at center-of-mass energies from 3.773 GeV to 4.95 GeV with an integrated luminosity of 22/fb, the properties of XYZ states are investigated at BESIII. The cross sections of $e^+e^- \to D^{*+} D^{*-}$ and $D^{*+} D^-$, $e^+e^- \to K^+ K^- J/\psi$, $e^+e^- \to \pi^+ \pi^- \psi_2(3823)$, and $e^+e^- \to \Lambda \bar{\Lambda}$ are measured. The new decay modes of $X(3872)...
Abstract
Stavros Katsanevas
Director European Gravitational Observatory
Coordinator REINFORCE
I will report on REINFORCE (REsearch INfrastructures FOR Citizens in Europe, 2019-2022) coordinated by the European Gravitational Observatory (EGO) and supported by the European Union’s Horizon 2020 SWAFS program. It has developed demonstrator projects in the leading citizen-science platform,...
The search for neutrinoless double beta ($0\nu \beta \beta$) decay is important because its discovery would reveal a lepton-number violating process and its connection to the origin of the neutrinos masses.
The LEGEND collaboration follows the GERDA and MAJORANA Demonstrator collaborations with the mission to build a ton-scale $ ^{76} $Ge based experiments. As a first phase, LEGEND-200 is...
Primordial Black Holes are hypothetical Black Holes formed in the very early universe and are potential Dark Matter Candidates. Focusing on the Primordial Black Holes mass range $[5\cdot10^{14}-1\cdot10^{17}]$ g, we point out that their evaporation can produce detectable signals in existing experiments. First of all, we study neutrinos emitted by PBHs evaporation. They can interact through the...
LUX-ZEPLIN (LZ) is a direct detection dark matter experiment located at the Sanford Underground Research Facility in Lead, South Dakota. The experiment consists of three nested detectors; a dual phase xenon TPC, an actively instrumented liquid xenon skin, and an outer detector neutron veto formed by 10 acrylic tanks of gadolinium-loaded liquid scintillator. The active region of the xenon TPC...
Recent multiplicity-dependent studies of particle production in pp and p-Pb collisions have shown similar features as in heavy-ion collisions. Measurements using resonances could help to understand the possible onset of collective-like phenomena and a non-zero lifetime of the hadronic phase in a small collision system. Measurements of the differential yields of resonances with different...
Rare B-hadron decays mediated by b-> s l l transitions provide a sensitive test of Lepton Flavour Universality (LFU), a symmetry of the Standard Model by which the coupling of the electroweak gauge bosons to leptons is flavour universal. Extensions of the SM do not necessarily preserve this symmetry and may give sizable contributions to these processes. Precise measurements of LFU ratios are,...
The Particle Physics Community Planning Exercise, “Snowmass”, is a prioritization process for scientific goals in the 5–10-year time scale organized by the Division of Particles and Fields of the American Physical Society. The topics of the extended forum are organized into 10 Frontiers, and each Frontier is further divided into Topical Groups. Community members organize within and across the...
The RES-NOVA project will hunt neutrinos from core-collapse supernovae (SN) via coherent elastic neutrino-nucleus scattering (CEνNS) using an array of archaeological lead (Pb) based cryogenic detectors. The high CEνNS cross-section on Pb and the ultra-high radiopurity of archaeological Pb enable the operation of a high statistics experiment equally sensitive to all neutrino flavors...
Although the LHC experiments have searched for and excluded many proposed
new particles up to masses close to 1 TeV, there are many scenarios that
are difficult to address at a hadron collider. This talk will review a
number of these scenarios and present the expectations for searches at an
electron-positron collider such as the International Linear Collider.
The cases discussed include...
The ATLAS experiment extensively uses multi-process (MP) parallelism to maximize data-throughput especially in I/O intensive workflows, such as the production of Derived Analysis Object Data (DAOD). In this mode, worker processes are spawned at the end of job initialization, thereby sharing memory allocated thus far. Each worker then loops over a unique set of events and produces its own...
PandaX experiment uses xenon as target to detect weak and rare physics signals, including dark matter and neutrinos. We are running a new generation detector with 4-ton xenon in the sensitive volume, PandaX-4T. The commissioning run data has pushed the constraints on WIMP-nucleon scattering cross section to a new level. This talk will give an overview of PandaX-4T experiment and data-taking....
After three years of shutdown (LS2), the LHC restarted in April 2022 and the plan is to run at an average instantaneous luminosity of 2.0 x 1033cm-2s-1 at the LHCb interaction point, a factor 5 higher than the previous runs. In order to cope with the increased luminosity and to take data at the full bunch crossing frequency (30MHz visible interaction rate) in trigger-less mode, the LHCb...
The search for neutrinoless double-beta (0νββ) decay aspires to cast light on a critical piece missing in our knowledge: the nature of the neutrino mass. This is the most sensitive experimental way to demonstrate that neutrino is a Majorana particle.
The challenge of observing such a potentially rare process demands a detector with excellent energy resolution, extremely low radioactivity...
Very-high energy physics (VHEP) is the development of a higher energy frontier that is complementary to HEP using accelerators to investigate interactions in space caused by fundamental particles and to study the structure and fundamental interactions of elementary particles. Probing for VHE elementary particles will also enable the discovery of VHE celestial objects and the elucidation of...
The LHCb collaboration recently discovered a doubly charmed tetraquark $T_{cc}$ with flavor $cc\bar u\bar d$ just $0.36(4)~$MeV below $D^0D^{*+}$ threshold. This is the longest lived hadron with explicitly exotic quark content known to this date. We present the first lattice QCD study of $DD^*$ scattering in this channel, involving rigorous determination of pole singularities in the related...
High energy physics is an international endeavor. Yet in Africa, research, education, and training programs in high energy physics (HEP) are limited in both human capacity and expertise, as well as in resource mobilization. Africa will participate meaningfully in HEP programs when the environment within the international HEP community is conducive, welcoming, and supportive.
Diversifying the...
this talk will review the main scientific goal of the DARWIN experiment: the 40 ton dual-phase Xenon TPC for WIMP dark matter search. Dark matter experiments with target masses beyond the ton scale are already reality: the XENONnT detector is currently taking its first science run data. In case of a positive dark matter detection in this detector a larger instrument will be required in order...
Measurements of hard processes in heavy-ion collisions provide powerful and broad information on the dynamics of the hot, dense plasma formed in relativistic nucleus-nucleus collisions. This talk gives an overview of the latest jet measurements with the ATLAS detector at the LHC, utilizing the high statistics 5.02 TeV Pb+Pb data collected in 2015 and 2018. This talk presents multiple...
In recent years, crowdfunding platforms have gained popularity as a way to raise funds for various endeavors. This talk discusses the use of crowdfunding as a non-traditional way to finance physics outreach projects. Such tools can provide much needed flexibility to projects and serve as a platform to spread the word about your project. The talk is based on first-hand experience using such...
MicroBooNE is an 85-tonne active mass liquid argon time projection chamber (LArTPC) at Fermilab. It has excellent calorimetric, spatial and energy resolution and is exposed to two neutrino beams, which make it a powerful detector not just for neutrino physics, but also for Beyond the Standard Model (BSM) physics. The experiment has competitive sensitivity to heavy neutral leptons possibly...
High Energy Physics is strongly aligned with cleverness and masculinity. ‘Not surprisingly, physics does an extremely good job at keeping people out’ (Anna Danielsson 2022). Therefore, inviting women and minorities is not enough. We need to understand and overcome the gendered, classed and raced politics of knowledge-producing processes in STEM. In this talk research results of mainly...
INFN CNAF is the National Center of INFN (National Institute for Nuclear Physics) for research and development in the field of information technologies applied to high energies physics experiments.
CNAF hosts the largest INFN data center which also includes WLCG Tier1 site (one of 13 around the world), providing resources, support and services needed for computing and data handling in the...
We discuss a strategy to study non-perturbatively QCD up to very high temperatures by Monte Carlo simulations on the lattice. It allows to investigate not only the thermodynamic properties of the theory but also other interesting thermal features. As a first concrete application, we compute the flavour non-singlet meson screening masses and we present the results of Monte Carlo simulations at...
A significant goal of high-energy nuclear collisions is to determine the Quantum Chromodynamics (QCD) phase diagram for the strongly interacting matter. The most experimentally accessible way to characterize the QCD phase diagram is to scan in temperature (T) and the baryon chemical potential (\mu_B). The hadronic matter exists in a state where the fundamental constituents, quarks and gluons,...
The Beam Dump Experiment (BDX) at Jefferson Laboratory (JLAB) is electron-beam thick-target experiment to search for Light Dark Matter (LDM) particles in the MeV-GeV mass range. BDX will exploit the high-intensity 10.6 GeV e$^-$ beam from CEBAF accelerator impinging on the beam dump of experimental Hall-A, collecting up to 10$^{22}$ electrons-on-target in a few years time. Any LDM particles...
The MoEDAL experiment deployed at IP8 on the LHC ring was the first dedicated search experiment to take data at the LHC in 2010. It was designed to search for Highly Ionizing Particle (HIP) avatars of new physics such as magnetic monopoles, dyons, Q-balls, multiply charged particles, and massive slowly moving charged particles in p-p and heavy-ion collisions. The MoEDAL detector will be...
A new opportunity for a possible neutrino flagship experiment in Europe opens by exploiting a unique opportunity that has long been hidden in the Chooz site — Europe’s historical and most powerful reactor neutrino science site. The “SuperChooz” project benefits by the existence of 2 caverns, formerly hosting the Chooz-A nuclear reactor complex, built in the 60’s. The Chooz-A caverns are...
The FASER experiment is a new small and inexpensive experiment that is being placed 480 meters downstream of the ATLAS experiment at the CERN LHC. FASER is designed to discover dark photons and other light and very weakly-interacting particles that are produced in the far-forward region, outside of the ATLAS detector acceptance. The experiment has been successfully constructed and installed...
The $_{\Lambda}^{3}\rm H$ is a bound state of proton (p), neutron (n) and $\Lambda$. Studying its characteristics provides insights about the strong interaction between the $\Lambda$ and ordinary nucleons. In particular, the $_{\Lambda}^{3}\rm H$ is an extremely loosely bound object, with a large wavefunction. As a consequence, the measured (anti-)$_{\Lambda}^{3}\rm H$ production yields in pp...
Reduction of Tl-208 backgrounds for Zr-96 neutrinoless double beta decay experiment using topological information of Cherenkov light
ZICOS is a future experiment for neutrinoless double beta decay using $^{96}$Zr nuclei. In order to achieve sensitivity over $10^{27}$ years, ZICOS will use tons of $^{96}$Zr, and need to remove $^{208}$Tl backgrounds as observed by KamLAND-Zen one order of...
This talk presents a model independent search for an additional heavy, mostly sterile, neutral lepton (HNL) which is capable of mixing with the Standard Model tau neutrino with a mixing strength of $|U_{\tau 4}|^{2}$, corresponding to the square of the extended Pontecorvo–Maki–Nakagawa–Sakata (PMNS) matrix element. HNLs are hypothetical particles predicted by many beyond Standard Model...
Heavy-ion collisions are a powerful device to probe the phase diagram of the strongly interacting matter. An issue of special interest is the transition between hadronic gas and quark-gluon plasma, especially the possible presence of the critical point. One of the methods of the critical point search is analyzing fluctuations and correlations of produced particles. An increase in the...
Following the first “Sustainable HEP” Workshop, hosted virtually by CERN 28 – 30 June 2021, members of our community have been compiling a white paper that aims to raise awareness of the environmental impact of our work, to suggest positive changes that we can make to our working practices and the infrastructure upon which they rely, and to identify the implications that these changes could...
The Pierre Auger Observatory, in the south of Mendoza province (Argentina), is the largest facility in the world to observe ultra-high-energy cosmic rays (UHECR) and has been taking data for almost twenty years. It is designed to simultaneous detect the longitudinal development of the extensive air showers in the atmosphere and the measurement of particles’ densities at ground level. This...
Flavour physics represents a unique test bench for the Standard Model (SM). New analyses performed at the LHC experiments are now providing unprecedented insights into CKM metrology and new results for rare decays. The CKM picture can provide very precise SM predictions through global analyses. In addition, the Unitarity Triangle analysis can also be exploited to constrain the parameter space...
PROSPECT is a reactor antineutrino experiment designed to search for short-baseline sterile neutrino oscillations and to perform a precise measurement of the U-235 reactor antineutrino spectrum. The PROSPECT detector collected data at the High Flux Isotope Reactor (HFIR) at the Oak Ridge National Laboratory, with the ~4-ton volume covering a baseline range of 7 m to 9 m. To operate in this...
A variety of detectors have been developed in both accelerator-based and non-accelerator-based experiments for the study of positronium physics beyond the standard model reported in early 2000 after solving the lifetime-puzzle of positronium. The KNU Advanced Positronium Annihilation Experiment (KAPAE) was constructed to study rare decay of positronium, search for QED violation of C, CP and...
In recent decades much attention has been given to women’s underrepresentation in science and engineering (SE), particularly in positions of leadership.
In this talk dominant theories about women's underrepresentation in SE are reviewed, in light of evidence. New theories are then presented together with examples of new research questions and findings. The talk concludes with a discussion...
In the last few years, gamma-ray astronomy opens a new window in the sub-PeV to PeV range inaugurated by the Tibet AS$\gamma$ collaboration followed by the HAWC and LHAASO collaborations. Gamma rays at this energy range are expected to be emitted by the neutral pion decay produced in the interaction between cosmic-ray particles and the interstellar matter, hence it is important to identify...
A core-collapse supernova (SN) offers an excellent astrophysical laboratory to test non-zero neutrino magnetic moments. In particular, the neutronization burst phase, which lasts for few tens of milliseconds post-bounce, is dominated by electron neutrinos and can offer exceptional discovery potential for transition magnetic moments. We simulate the neutrino spectra from the burst phase in...
In the journey to explore the strong interaction among hadrons, ALICE has for the first time flared out its femtoscopic studies to nuclei. The large data sample of high-multiplicity pp collisions at $\sqrt{s}$ = 13 TeV allows the measurement of the proton-deuteron (p-d) and the hyperon-deuteron ($\Lambda$-d) momentum correlations. The femtoscopic study of these systems opens the door to...
The LHeC and the FCC-he offer fascinating, unique possibilities for discovering BSM physics in DIS, both due to their large centre-of-mass energies and high luminosities. In this talk we will show the prospects for observing extensions of the Higgs sectors both with charged and neutral scalars, anomalous Higgs couplings and exotic decays. Then we will discuss searches for R-parity conserving...
NUSES is a space mission project promoted by the Gran Sasso Science Institute (GSSI) in collaboration with Thales Alenia Space Italy and the Italian National Institute for Nuclear Physics (INFN) with the aim at investigating cosmic radiation, astrophysical neutrinos, Sun-Earth environment, space weather and possible signals of magnetosphere-ionosphere-lithosphere coupling (MILC) phenomena....
The recent MODE whitepaper*, proposes an end-to-end differential pipeline for the optimisation of detector designs directly with respect to the end goal of the experiment, rather than intermediate proxy targets. The TomOpt python package is the first concrete endeavour in attempting to realise such a pipeline, and aims to allow the optimisation of detectors for the purpose of muon tomography...
The study of high-$p_T$ tails at the LHC can be a complementary probe to low-energy observables when investigating the flavour structure of the Standard Model and its extensions.
Motivated by the $B$ anomalies, we study the interplay between low-energy observables and both charged and neutral current Drell-Yan measurements, and their implications for semileptonic interactions.
The...
When and where it is convenient to start working on a path for raising awareness on gender issues? Our answer is…early! The high school is definitely a good start! And if the need is in the schools we, the Italian (CNR -Italian National Research Counci- and INFN -Italian National Institute for Nuclear Physics) component of the “GENERA-network” decided to go there.
We act for a few years...
A key focus of the physics program at the LHC is the study of head-on proton-proton collisions. However, an important class of physics can be studied for cases where the protons narrowly miss one another and remain intact. In such cases the electromagnetic fields surrounding the protons can interact producing high energy photon-photon collisions, for example. Alternatively, interactions...
Correlations between charged particles provide important insight about hadronization processes. We present recent results on Bose-Einstein two-particle correlation using ATLAS data at the center-of-mass energy of 13 TeV. Also, if available, the analysis of the momentum difference between charged hadrons in pp, p-lead, and lead-lead collisions of various energies is performed in order to study...
The proposed ECCE detector at the future Electron-Ion-Collider (EIC) at Brookhaven National Laboratory is a physics-driven design concept, meeting and exceeding the EIC physics program requirements.
To gain further insights on the partonic structure of the nucleon, jets in the hadron-going (forward) direction provide an excellent probe.
They provide a strong handle on parton kinematics in...
DArk Matter Particle Explorer (DAMPE) satellite mission, launched in December 2015, is in operation for more than 6 years. The main sub-detector, a thick imaging calorimeter BGO is capable of measuring gamma rays and cosmic-ray electrons up to about 10 TeV and cosmic ray ions up to about 100 TeV. This talk gives an overview of the mission and presents the latest results on the electron, proton...
Studies of physics and detector performance of a possible experiment at a Muon Collider are attracting a lot of interest in the High Energy Physics community. Projections show that high precision measurements are possible as well as large new physics discovery potential. However, the presence of a large beam-induced background (BIB), generated by the muon beams decay, poses new computing and...
The Drell-Yan processes $pp\to\ell\nu$ and $pp\to\ell\ell$ at high transverse momentum can provide important probes of semileptonic transitions relevant to flavor physics and complementary to the commonly used low energy observables. We parametrize generic New Physics (NP) contributions to these processes and derive the corresponding bounds by recasting the latest ATLAS and CMS (run 2)...
Research institutions and organisations are paying increasing attention to diversity and inclusion.
In the talk we will discuss why diversity and inclusion targets should not be detached from actions to increase equal opportunities for all.
The Calorimetric Electron Telescope (CALET), in operation on the International Space Station since 2015, collected a large sample of cosmic-ray over a wide energy interval. The instrument identifes the charge of individual elements up to nickel and beyond and, thanks to a homogeneous lead-tungstate calorimeter, it measures the energy of cosmic-ray nuclei providing a direct measurement of their...
The LUXE experiment aims at studying high-field QED in electron-laser and photon-laser interactions, with the 16.5 GeV electron beam of the European XFEL and a laser beam with power of up to 350 TW. The experiment will measure the spectra of electrons, positrons and photons in expected ranges of $10^{-3}$ to $10^9$ per 1 Hz bunch crossing, depending on the laser power and focus. These...
BESIII has the world’s largest samples of $J/\psi$ and $\psi(3686)$ events from
$e^+ e^-$annihilations, which offer an ideal and clean laboratory to study light meson
spectroscopy , in particular for the search for QCD exotics. Recent important
achievements in this field, including the observation of a 1-+ state, $\eta_1(1855)$ in
$J/\psi->\gamma \eta \eta’$, the observation of the...
Despite the lack of experimental confirmation of the Migdal effect, several underground direct dark matter experiments are exploiting this rare atomic phenomenon to extend their sensitivity to light WIMP-like candidates. However, this effect is yet to be observed in nuclear scattering. The Migdal in Galactic Dark mAtter expLoration (MIGDAL) experiment aims to make the first unambiguous...
Background modelling is one of the main challenges of particle physics analyses at hadron colliders. Commonly employed strategies are the use of simulations based on Monte Carlo event generators or the use of parametric methods. However, sufficiently accurate simulations are not always available or may be computationally costly to produce in high statistics, leading to uncertainties that can...
Extensions of the Standard Model with right handed (sterile) neutrinos pose viable explanations for the origin of neutrino masses and could solve a variety of open questions in physics such as neutrino oscillation anomalies, the nature of dark matter, and baryon asymmetry. Multiple models posit the existence of a GeV-scale, sterile neutrino (also called a Heavy Neutral Lepton (HNL)), which...
Fast timing detectors have become more and more important for high energy physics and other technological application, with their development being crucial for several aspect of the High Luminosity LHC program. The CMS Proton Precision Spectrometer (PPS), operating at the LHC, makes use of 3D silicon tracking stations to measure the kinematics of protons scattered in the very forward region,...
The abundant production of beauty and charm hadrons in the $5\cdot 10^{12}$ Z boson decays expected at FCC-ee offers outstanding opportunities in flavour physics that exceed those available at Belle II by a factor of twenty, and are complementary to the LHC heavy-flavour programme. A wide range of measurements will be possible in heavy-flavour spectroscopy, rare decays of heavy-flavoured...
Panel discussion with all speakers
Neutrinos are probably the most mysterious particles of the Standard Model. The mass hierarchy and oscillations, as well as the nature of their antiparticles, are currently being studied in experiments around the world. Moreover, in many models of New Physics, baryon asymmetry or dark matter density in the universe are explained by introducing new species of neutrinos. Among others, heavy...
The High Energy cosmic-Radiation Detection (HERD) facility is a future space experiment which is designed for the direct measurement of cosmic-rays (CR). The instrument will be installed aboard the China’s Space Station around 2027 and is based on a homogeneous, deep, 3D segmented calorimeter. The calorimeter is surrounded by scintillating fiber trackers, anti-coincidence scintillators,...
The hybrid mesons form a part of the exotic spectrum of the standard model. The recent observation of the isoscalar hybrid, called the $\eta_1(1855)$, provides an important step towards the completion of the $1^{-+}$ nonet. In the present work, we analyze the masses and two-body decays of the members of this nonet using a model Lagrangian. The isovector $\pi_1(1600)$ has been studied...
The quest for Dark Matter (DM) and its nature has been puzzling scientists for nearly a century. This puzzle has engendered theories that span nearly hundred orders of magnitude in mass scales with widely contrasting nature. It has also motivated decades of experimental efforts correspondingly different in the wide variety of their target masses, observables, technologies and interpretations....
The Precision Proton Spectrometer (PPS) started operating in 2016 and has collected more than 110 fb−1 of data over the course of the LHC Run 2, now fully available for physics analysis. The talk will discuss the key features of PPS alignment and optics calibrations developed from scratch. The reconstructed proton distributions, performance of the PPS simulation and finally validation of the...
Most of the analyses of rare meson decays in the literature assume that neutrinos are Dirac particles and consequently do not consider the possibility of lepton number violating interactions. I will present efficient strategies that would allow experimental collaborations in the future to give us insights whether footprints of Majorana neutrinos might be present in their data.
We exhibit the geometric structure of the convex cone in the linear space of the Wilson coefficients for the dimension-8 operators involving the left-handed lepton doublet $L$ and the Higgs doublet $H$ in the Standard Model effective field theory (SMEFT). The boundary of the convex cone gives rise to the positivity bounds on the Wilson coefficients, while the extremal ray corresponds to the...
The Tibet ASgamma experiment is located at 4,300m above sea level, in Tibet, China. The experiment is composed of a 65,700 m2 surface air shower array and 3,400 m2 underground water Cherenkov muon detectors. The surface air shower array is used for reconstructing the primary particle energy and direction, while the underground muon detectors are used for discriminating gamma-ray induced...
The study of exotic mesons such as gluonic hybrids gives a greater insight into how quarks and gluons bind to form such states and hence increase our understanding of the fundamental strong force. Furthermore, the double pion photoproduction is known as a ideal tool for the investigation of nucleon resonances, especially the exotic meson states. Hereby, to study the interference of meson...
Instructions to upload material on indico.
also to accept, but in different track
The Any Light Particle Search (ALPS) II is a light-shining-through-a-wall (LSW) experiment
which investigates the existence of axions and axion-like-particles (alps) in the sub-eV mass range. Their existence is motivated by QCD physics, astrophysics and cosmology; alps are also promising candidates for dark matter. ALPS~II aims to probe the coupling of axions and alps (to photons) down to a...
