We discuss the correlation between the $B \to K^{(\ast)} \nu \nu$ and $B \to K^{(\ast)} \ell \ell$ decay modes in the Standard Model (SM) and its several popular extensions. This helps obtaining more accurate SM determination of $\mathcal{B}(B \to K^{(\ast)} \nu \nu)$ which is useful in view of the upcoming experimental measurement at Belle-II. In addition to that, we also show the impact of...
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...
Based upon simulations and calculations and a detection scheme reported earlier and some recent modifications, the proposal of a narrow-mass range search for invisible axions (or Axion-Like Particles, ALP’s) is presented here with high potential for success. Our model is based upon the central assumption that the axionic field (or the ALP field) is the dominant field with observable density...
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...
We propose a novel probabilistic model for the reconstruction of point-source events, with the dependence of scintillation light time response curve on the PE number deduced from first principles. It follows naturally from the time response curve and is unbiased.
The Jiangmen Underground Neutrino Observatory(JUNO) detector is 20 kton underground liquid scintillator detector, with the primary...
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.,...
The algorithm used in the alignment of the Inner Detector of the ATLAS experiment is based on the track-to-hit residual minimization in a sequence of hierarchical levels (ranging from mechanical assembly structures to individual sensors). It aims to describe the detector geometry and its changes in time as accurately as possible, such that the resolution is not degraded by an imperfect...
The ATLAS Open Data project aims to deliver open-access resources for education and outreach in High Energy Physics using real data recorded by the ATLAS detector. The Open Data release so far has resulted in the release of a substantial amount of data from 8 TeV and 13 TeV collisions in an easily-accessible format and supported by dedicated software and documentation to allow its fruitful use...
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...
The new ATLAS pixel detector that will operate in the HL-LHC will consist of 5 barrel layers and several end-cap disks, equipped with pixel modules. New strategies are under development to safely and accurately load these pixel modules on carbon-based local-support structures. The local supports provide both, support and cooling to the modules. An efficient thermal path between the module and...
We summarize the status of automated NLO SM corrections for hadron and lepton collider processes in the multi-purpose event generator WHIZARD. The focus will be on NLO EW and QCD-EW mixed corrections at the LHC. Also, recent progress on the inclusion of EW corrections in future lepton collider processes and on the POWHEG-matched event generation in the NLO automated setup will be discussed.
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...
Indian Scintillator Matrix for Reactor Anti-Neutrinos (ISMRAN) is an above-ground antineutrino experiment at very short baselines located at Dhruva reactor facility in Bhabha Atomic Research Centre, Mumbai. ISMRAN detector setup consisting of an array of 9×10 optically separated 100 cm long with a cross-section of 10 × 10 $cm^2$ Gd-wrapped plastic scintillator...
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...
Many analyses in ATLAS rely on the identification of jets containing b-hadrons
(b-jets). The corresponding algorithms are referred to as b-taggers. A deep
neural network based b-tagger, DL1r, has been widely used in ATLAS Run 2
physics analyses. Its performance needs to be measured in data to correct the
simulation. In particular, the measurement of the mis-tag rate for light jets...
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...
Charged-particle pseudorapidity measurements help in understanding particle production mechanisms in high-energy hadronic collisions, from proton-proton to heavy-ion systems. Performing such measurements at forward rapidity, in particular, allows one to access the details of the phenomena associated with particle production in the fragmentation region. In ALICE, this measurement will be...
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...
T2K (Tokai to Kamioka) is a long-baseline neutrino oscillation experiment
located in Japan. One of the most challenging tasks of T2K is to determine
whether CP is violated in the lepton sector. By utilizing the near detector
(ND280) data, T2K can constrain neutrino interaction and flux uncertainties
by fitting a parametrised model to data. This allows for a significant reduction
of...
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...
Constraints on Higgs boson inclusive production with transverse momentum above 1 TeV are reported for the first time by the ATLAS Collaboration. This kinematic region is not yet well constrained by Higgs boson measurements and is sensitive to new physics effects, as predicted in some Beyond Standard Model scenarios. The analysed data were recorded from proton-proton collisions at a...
Lepton-flavor-violating (LFV) scalar portal is an interesting mechanism that connects the dark sector to the visible one. This mechanism leads to a rich phenomenology including an extra contribution to muon anomalous magnetic moment desirable for alleviating the discrepancy between the updated SM prediction and the combined results of Fermilab and BNL measurements. With the low-energy...
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...
In this talk, we systematically study the algebraic structure of the ring of the flavor invariants and the sources of CP violation in the seesaw effective field theory (SEFT), which includes the dimension-five Weinberg operator and one dimension-six operator at the tree-level matching. For the first time, we calculate the Hilbert series and explicitly construct all the primary flavor...
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...
To cope with the high event pile-up, the liquid argon time projection chamber of the near detector complex of the Deep Underground Neutrino Experiment, called ND-LAr, relies on an innovative modular design featuring an advanced high-coverage photon detection system, a true 3D pixelated charge readout, and a low-profile resistive-shell field cage. The capabilities of this detector, including...
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 ATLAS tracking system will be replaced by an all-silicon detector for the HL-LHC upgrade.
The innermost tracking system will consist of 5 barrel layers and several end-cap disks, equipped with pixel modules. The pixel detector will operate in most challenging environment, which imposes unprecedent requirements on the radiation hardness and readout speed. A serial power scheme will be...
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...
In July 2020, Super-Kamiokande has been upgraded by loading 13 tons of gadolinium(Gd) sulfate octa-hydrate as a new experimental phase “SK-Gd”. Thermal neutron capture on Gd emits gamma-rays with a total energy of about 8 MeV so that we obtain higher neutron tagging efficiency in SK-Gd than in the pure-water phase. Therefore, an increase in the sensitivity of the search for the Supernova Relic...
We investigate the potential reach at the large hadron collider (LHC) of a search for a long-lived dark vector boson, also called a dark $Z$ or $Z_D$, through exotic decays of the standard-model Higgs boson $h$ into either $Z_DZ_D$ or $ZZ_D$. Besides, we investigate a decay of $h$ into two dark Higgs bosons $h_Dh_D$ with each $h_D$ decaying into a pair of $Z_D$'s. We consider the production of...
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...
FASER (ForwArd Search ExpeRiment) fills the axial blindspot of other, radially arranged LHC experiments. It is installed 480 meters from the ATLAS interaction point, along the collision axis. FASER will search for new, long-lived particles that may be hidden in the collimated reaction products exiting ATLAS. The tracking detector is an essential component for observing LLP signals. FASER's...
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...
In this poster, we present a study of the rejection of jets containing more than one b-hadron in the ATLAS “online” b-taggers, aiming to significantly reduce the readout rates of the ATLAS b-jet trigger system. It is important to be able to efficiently select events containing b-jets at the trigger level for analyses that involve many b-quarks in the final states, such as the search for HH to...
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...
Modern accelerator-based neutrino experiments use complex nuclei, such as argon, as neutrino targets that rely on nuclear models to unfold the reconstructed neutrino energy to the true neutrino energy. The nuclear effects complicate the neutrino oscillation measurements and are not well-understood, and there are very limited measurements of hadron cross sections on argon. ProtoDUNE-SP, a...
Short-lived hadronic resonances are good probes to investigate the late-stage evolution of ultra-relativistic heavy ion collisions. Since they have lifetimes comparable to that of the system created after the collision, the measured yields may be affected by the competing rescattering and regeneration processes during the hadronic phase, which modify the particle's momentum distributions after...
The event of astroparticle collision at high energy was detected in 1975 during the balloon flight in the stratosphere. The data of hundred particle tracks in x-ray films have been re-analyzed in the style of LHC experiments: rapidity distributions of charged particles and transverse mass spectra of multi-particle production have been built. The comparison of multiple histograms with 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...
The study of event-by-event mean transverse momentum ($p_{\rm T}$) fluctuations is a useful tool to understand the dynamics of the system produced in ultrarelativistic heavy-ion collisions. The measurement of higher-order fluctuations of mean-$p_{\rm T}$ can help in probing the hydrodynamic behavior of the system and is considered to be a direct way of observing initial-state fluctuations. It...
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...
Femtoscopy is a technique that can be used to measure the space-time characteristics of the particle-emitting source created in heavy-ion collisions using momentum correlations between two particles. In this report, the two-pion and two-kaon femtoscopic correlations for Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV within the framework of (3+1)D viscous hydrodynamics combined with...
We report on our recent results on production mechanism of the famous $X(3872)$ meson [1] which structure is not well known. We calculate the total cross section and transverse momentum distributions for the production of enigmatic $\chi_{c,1}(3872)$ (or X(3872)) assuming different scenarios:
$c \bar c$ state and $D^{0*} {\bar D}^0 + D^0 {\bar D}^{0*}$ molecule.
The derivative of the $c...
The implementation of a web portal dedicated to Higgs boson research is presented. A database is created with more than 1000 relevant articles using CERN Document Server API and web scraping methods. The database is automatically updated when new results on the Higgs boson become available. Using natural language processing, the articles are categorised according to properties of the Higgs...
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...
A search for standard model Higgs bosons produced with transverse momentum greater than 450 GeV and decaying to charm quark-antiquark pairs is performed using proton-proton collision data collected by the CMS experiment at the LHC at 13 TeV. The search is inclusive in the Higgs boson production mode. Highly Lorentz-boosted Higgs bosons are reconstructed as single large-radius jets and are...
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...
Jet flavour identification algorithms are of paramount importance to maximise the physics potential of the Future Circular Collider (FCC). As one example, out of the extensive FCC-ee physics program, flavour tagging is crucial for the Higgs program, given the dominance of hadronic decays of the Higgs boson. A highly efficient discrimination of b, c, strange, and gluon jets allows to access...
The Jiangmen Underground Neutrino Observatory is a 20~kton and $3\%/\sqrt{E ({\rm MeV})}$ energy resolution multi-purpose liquid scintillator detector located at a 700~m underground laboratory in the south of China (Jiangmen city, Guangdong province). The exceptional energy resolution and the massive fiducial volume of the JUNO detector offer great opportunities for addressing many essential...
Kaon production cross sections provide a crucial constraint on K+ production by atmospheric neutrinos in proton decay searches. Current neutrino-nucleus event generators largely rely on theoretical models for the descriptions of backgrounds due to kaons and need to be verified by measurements. The event rate for these processes is low as compared to pion production channels because of Cabibbo...
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...
Heavy-quark symmetry (HQS), despite being approximate, allows to relate dynamically many hadron systems. In the HQS-limit heavy mesons and doubly-heavy baryons are very similar as their dynamics is determined by a light quark moving in a color field of a static source. As in the meson case, matrix elements of non-local interpolation currents between the baryon state and vacuum are determined...
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...
This contribution presents an update on the Analytical Method (AM) algorithm for trigger primitive (TP) generation in the CMS Drift Tube (DT) chambers during the High Luminosity LHC operation (HL-LHC or LHC Phase 2). The algorithm has been developed and validated both in software with an emulation approach, and through hardware implementation tests. The algorithm is mainly divided in the...
The upcoming High-Luminosity LHC will allow 200 proton-proton collisions per bunch crossing on average, thus creating highly complex events demanding efficient data reconstruction and processing. In order to meet these requirements, the Compact Muon Solenoid (CMS) experiment is upgrading its Level-1 trigger system. Among these updates will be the reconstruction of charged particle tracks in...
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.
At BESIII, the lineshapes of $e^+e^- ->\phi \eta', \phi \eta, K K, \omega \pi^0, \eta \pi \pi,$ and $\omega \pi \pi$ are measured from 2.0 to 3.08 GeV, where resonant structures are observed in these processes. Multiple lineshapes of intermediate state are obtained by a partial wave analysis of $e^+e^- ->K^+ K^- \pi^0 \pi^0, K^+K^- \pi^0$ and the structures observed provide essential input to...
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 linear accelerator Linac-200 at JINR is a new facility, constructed to provide electron test beams to carry out particle detectors R&D, to perform studies of advanced methods of electron beam diagnostics, and for applied research. The core of the facility is a refurbished MEA accelerator from NIKHEF. The key accelerator subsystems including controls, vacuum, precise temperature regulation...
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....
Cross section measurements for heavy-ion collision processes require a precise estimate of the integrated luminosity of the recorded data set. During the 2015-2018 data-taking period (“Run 2”) of the LHC, lead-lead, proton-lead, and proton-proton collisions at the reference energy were recorded with the CMS experiment. For these data sets, the luminosity measurements are reported. The absolute...
In high energy physics experiments, the scintillating materials or the Cherenkov radiators are widely used which emit light pulses at certain wavelength when interacting with the incident particle. The information carried by the light pulse reflects the characteristics of the incident particle. Since the light directly emitted is always weak (restricted by the light yield of the medium), the...
In high-energy particle physics, complex Monte Carlo simulations are needed to connect the theory to measurable quantities. Often, the significant computational cost of these programs becomes a bottleneck in physics analyses.
In this contribution, we evaluate an approach based on a Deep Neural Network to reweight simulations to different models or model parameters, using the full kinematic...
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 latest results from KamLAND (Japan) and Borexino (Italy) experiments give us an unprecedented opportunity to investigate the inner Earth. For almost 20 years these experiments have been collecting the feeble signal coming from geoneutrinos, the electron antineutrinos produced in the 238U and 232Th decay chains inside our planet. The energy released in these...
Employing the hyperspherical approach, we study the ground and excited state mass spectra of the non-strange single charm baryons. Introducing an ansatz method, we solve the Schrodinger equation. The hyperfine interactions are considered as a perturbation in our calculation. We extend our scheme to predict the magnetic moments and radiative decay widths of the baryons. We compare our results...
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...
Properties of 8” silicon-sensor prototypes for the CMS High Granularity Calorimeter (HGCAL) have been studied by measuring the leakage current and depletion voltage, before and after irradiation, at CERN.
A semi-automated measurement setup, called PM8, and a fully-automated setup, called ALPS (Automatic Low-temperature Probe Station) have been developed at CERN for this purpose.
Similar...
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...
This poster will present a measurement of the Higgs boson mass in the four-lepton decay channel using 139 $\rm fb^{-1}$ of proton-proton collision data at the Large Hadron Collider recorded by the ATLAS detector, corresponding to the full Run 2 dataset. For a Higgs boson with $m_H$ = 125 GeV, the expected total (stat) uncertainty is 181 MeV (178 MeV).
A measurement of the top quark pole mass in events where a top quark-antiquark pair ($\text{t}\overline{\text{t}}$) is produced in association with one additional jet is presented. This analysis is performed using proton-proton collision data at 13 TeV collected by the CMS experiment at the CERN LHC, corresponding to a total integrated luminosity of 36.3 fb$^{-1}$. Events with two opposite...
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...
Measurements of multiboson production at the LHC probe the electroweak gauge structure of the Standard Model for contributions from anomalous couplings. Of particular significance are processes involving quartic gauge boson couplings. In this talk we present recent ATLAS results on the measurement of electroweak production of a Zgamma pair in association with two jets when Z decays to...
Coalescence is one of the main models used to describe the formation of light(anti)nuclei. It is based on the hypothesis that two nucleons close in phase space can coalesce and form a nucleus. Coalescence has been successfully tested in hadron collisions at colliders, from small (pp collisions) to large systems (Au-Au collisions). However, in Monte Carlo simulations (anti)nuclear production is...
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...
Multicritical-Point Principle (MPP) provides a natural scenario to explain the large hierarchy between the Planck scale and the electroweak scale via the Coleman-Weinberg mechanism. We discuss a minimal model to realize such a scale generation, where two real scalar fields are added to the Standard Model and one of them can be a dark matter candidate. We show that the successful scenario,...
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...
The long-existing problem of neutrino mass and mixing can be connected to cosmological phenomena, such as the leptogenesis and the existence of dark matter (DM). In the extension of the type I seesaw model with two right-handed (RH) neutrinos, the seesaw Yukawa can drive the DM production, even with the competition from gravitational effect and constraints from leptogenesis. However, the DM...
Axions and axion-like particles (ALPs) are some of the most popular candidates for dark matter [1]. Axions are also considered [2] as new physics contributions to the muon g – 2 . Following the existed interest to ALPs we consider interaction between neutrinos and hypothetical axion-like particles and derive for the first time the probability of neutrino oscillations accounting for their...
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...
It is believed that the running (for instance, COHERENT) and forthcoming terrestrial neutrino experiments will be sensitive to the neutrino charge radius [1] that is one of the neutrino fundamental electromagnetic characteristics [2] predicted [3] to be non-zero even in the Standard Model. In this work we continue our studies [4] on neutrino oscillations in an environment with large electric...
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...
Superweak force is a U(1) extension of the standard model, which in addition to accompanying neutral gauge boson, adds three massive sterile Majorana neutrinos and a complex singlet scalar to the particle zoo. It aims to explain dark matter, accelerating expansion of the universe, neutrino mass generation, vacuum metastability, cosmic inflation and baryonic asymmetry of the universe. In the...
The rapid development of neutrino astronomy, which is expressed, among other things, in the emergence of new neutrino mega-projects capable of effectively registering astrophysical neutrino fluxes requires a detailed knowledge of a neutrino evolution inside the neutrino sources (type II supernovae, gamma-ray bursts). The evolution can be influenced by many factors each should be accounted for...
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...
If massive neutrinos are Majorana particles, then the lepton number should be violated in nature and neutrino-antineutrino oscillations $\nu^{}_\alpha \leftrightarrow \overline{\nu}^{}_\beta$ (for $\alpha, \beta = e, \mu, \tau$) will definitely take place. In the present paper, we study the properties of CP violation in neutrino-antineutrino oscillations with the non-unitary leptonic flavor...
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...
No analysis in ATLAS or CMS has so far searched for FCNC decays of top quarks into a new scalar (X) in a broad mass range probing branching ratios below $10^{-3}$. In the case of the Higgs boson, branching ratios $t\rightarrow H+u/c$ are predicted within the SM to be of about $O(10^{-17})/O(10^{-15})$. Several beyond-SM theoretical models predict new particles and enhanced branching ratios. In...
The production of light nuclei and antinuclei in particle collisions can be described as the coalescence of final state nucleons close in phase space. In heavy ion collisions, it is usually assumed that the formation probability is controlled by the size of the interaction region, while nucleon momentum correlations are either neglected or treated as a collective effect. Interestingly, recent...
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...
Open heavy flavor production is a crucial probe for the understanding of the QCD matter under extreme conditions created in heavy ion collisions. Heavy flavor quarks are produced predominantly in hard partonic scatterings at the very early stage of heavy ion collisions and experience the whole evolution of the hot and dense medium. Open heavy flavor production provides access to studying charm...
Leptonic CP violation is one of the most important topics in neutrino physics. CP violation in
the neutrino sector is also strongly related to the nature of the neutrino: whether it is a Dirac
or a Majorana particle. In this contribution CP-violating effects in Majorana neutrino
oscillations in supernova media are studied. We show that resonances in neutrino-
antineutrino oscillations...
We present two modules as part of the Czech Particle Physics Project (CPPP). These are intended as learning tools in masterclasses aimed at high-school students (aged 15 to 18). The first module is dedicated to the detection of an Axion-Like-Particle (ALP) using the ATLAS Forward Proton (AFP) detector. The second module focuses on the reconstruction of the Higgs boson mass using the Higgs...
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.
We start with an introduction to the theory of neutrino electromagnetic properties [1-5]. Then we consider experimental constraints on neutrino magnetic µν and electric dν moments, millicharge qν, charge radii <rν2> and anapole aν moments from the terrestrial experiments (the bounds from MUNU, TEXONO and GEMMA experiments, as well as from Super-Kamiokande and Borexino). A special credit is...
Magnetic Monopoles are one of the inevitable predictions of GUT theories. They are produced during phase transition in the early universe, but also mechanisms like Scwinger effect in strong magnetic fields might be taken into account. I will show that from the detection of an intergalactic magnetic field of primordial origin we can infer additional bounds on the magnetic monopole number...
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,...
Identification of hadronic jets originating from heavy flavor quarks in the final state is extremely important to study the properties of the top quark and the Higgs boson, along with various searches for signatures of new physics beyond the standard model. The latest developments in the identification algorithms based on deep learning methods make it an interesting topic also from a technical...
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,...
In the linear seesaw framework, we analyse the implications of modular $ A^\prime_5$ symmetry on neutrino oscillation phenomenology. To preserve the holomorphic aspect of the superpotential, we incorporate six heavy fermion superfields along with a pair of weightons to establish the well defined mass structure for the light active neutrinos as needed by the linear seesaw mechanism. Modular...
Axion and axion-like-paricles (ALPs) are well motivated cold dark matter candidates. Nevertheless, an astoundingly huge parameter space remains unexplored despite much effort, ranging from fuzzy dark matter at $m_a\sim 10^{-22}$ eV to light dark matter at $m_a\sim $ keV. Most experimental ALP searches rely on the characteristic two-photon--ALP coupling. This coupling has a number of...
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 progress in their research, scientific communities generally rely on shared computing resources aggregated into clusters.
To provide fair use of the computing resources to every user, administrators of these clusters set up Local Resources Management Systems.
They orchestrate the scientific workloads and the resources by allowing a given workload to be executed for a certain time on a...
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 coherent elastic neutrino-nucleus scattering process (CE$\nu$NS) is a powerful probe of the possible new neutral boson in the theory beyond the standard model, which is a possible explanation of the muon $(g−2)_\mu$ anomaly. CE$\nu$NS was first observed in 2017 at the COHERENT experiment by the cesium-iodide (CsI) detector and later in 2020 at the argon (Ar) detector. Recently, the new...
The spectroscopy of higher lying charmonium states together with exotic mesons with masses above the 2mD open charm threshold has been full of surprises and remains poorly understood [1]. It is a good testing tool for the theories of strong interactions, including: QCD in both the perturba-tive and non-perturbative regimes, LQCD, potential models and phenomenological models. The ex-periments...
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.
Portal sectors, in the form of new fermions and scalars beyond the Standard Model, are among the simplest possibilities connecting the Standard Model to dark matter. However, minimal realizations of this idea often lead to troublesome cosmological histories or are in tension with dark matter detection experiments. I will discuss possible solutions to these issues in the context of dark matter...
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...
As an underground multi-purpose neutrino detector with 20 kton liquid scintillator, Jiangmen Underground Neutrino Observatory (JUNO) has great potential to detect the diffuse supernova neutrino background (DSNB). Depending on the latest knowledge about the average supernova neutrino spectrum, the star-formation rate, and the ratio of the failed black-hole-forming supernovae, it is predicted to...
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 phenomenon of neutrino oscillations emerges due to coherent superposition of neutrino mass states. An external environment can modify a neutrino evolution in a way that the coherence is violated. Such a violation is called quantum decoherence of neutrino mass states and leads to the suppression of flavor oscillations. We overview our recent results on neutrino flavour oscillations...
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...
The MicroBooNE detector is a liquid argon time projection chamber (LArTPC) which recently finished recording neutrinos from both the Booster Neutrino Beam and the Neutrinos at the Main Injector beam at Fermilab. One of the primary physics goals of MicroBooNE is to make detailed measurements of neutrino-argon scattering cross sections, which are critical for the success of future neutrino...
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...
This study presents a search for a new vector gauge boson $Z'$ predicted by the $L_{\mu}-L_{\tau}$
model with the ATLAS detector at the Large Hadron Collider.
The search is carried out in the final state with four muons (4$\mu$), using full data-set collected in Run 2 in pp collisions at $\sqrt s$ = 13 TeV, corresponding to an integrated luminosity of 139 fb$^{-1}$. A deep learning Neutral...
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...
This poster presents a search for Dark Matter produced in association with a Higgs boson decaying to b-quarks using the data corresponding to an integrated luminosity of 139/fb collected with the ATLAS detector in pp collisions at $sqrt{s}$ = 13 TeV at the Large Hadron Collider. The targeted events typically contain large missing transverse momentum and either two b-tagged small-radius jets or...
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.
Four top-quark production, a rare process in the Standard Model (SM) with a cross-section around 12 fb, is one of the heaviest final states produced at the LHC, and it is naturally sensitive to physics beyond the Standard Model (BSM). The central value of the cross section measured by ATLAS is twice as large as the SM prediction (albeit with large uncertainties). A follow-up analysis is the...
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...
A large number of physics models that extend the Standard Model predict the existence of new, massive, long-lived particles. Searches for these processes may target its decay products at a significant distance from the collision point. This signature provides interesting technical challenges due to their special reconstruction requirements as well as their unusual backgrounds. This poster will...
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.
The result of search for non-resonant di-Higgs production in the $bbbb$ final state using full Run-2 dataset of proton-proton collisions at $\sqrt{s}$=13 TeV with the ATLAS detector is presented. The $bbbb$ final state is one of the most sensitive channels for measuring the Higgs self-coupling and di-Higgs production cross-section, thanks to the highest branching ratio. The analysis utilizes a...
The most recent results on non-resonant Higgs bosons pairs production in the final state with two bottom quarks and two tau leptons will be presented. This final state has a sizeable branching fraction (7.3%) and the analysis benefit also from precise tau identification algorithms developed within the CMS collaboration. The analysis targets the gluon-gluon fusion and vector boson fusion...
Top quarks and in general heavy quarks are likely messengers to new physics. The scrutiny of these particles' properties must be completed by the measurement of electroweak qqbar production at high energies, in particular for the top-quark. The International Linear Collider will offer favorable low-background environment of e+e- annihilation combined with a high-energy reach.
This talk will...
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...
Higgs boson pair (HH) production is a sensitive probe of the Higgs boson trilinear self-coupling and an opportunity to explore Beyond the Standard Model theories. This poster presents results on the search for non-resonant and resonant HH production in the final state with two b-jets and two tau-leptons. The analysis is performed using an integrated luminosity of 139 $\rm fb^{-1}$. The...
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...
Single-differential cross section predictions for top quark pair production are presented at NLO, using running top quark mass renormalization schemes. The evolution of the mass of the top quark is performed in the MSR scheme as $m_t^{\textrm{MSR}}(\mu)$ at renormalization scales $\mu$ below the $\overline{\textrm{MS}}$ top quark mass $\overline{m}_t(\overline{m}_t)$, and in the...
In the Standard Model (SM), the $b \to s$ and $b \to d$ flavor-changing neutral currents (FCNC), being loop-induced, are standard experimental channels for testing the SM precisely and searching for possible physics beyond the SM. Purely annihilation decays of $B$-mesons are of significant interest as in the SM they are extremely suppressed and New Physics effects can increase substantially...
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...
Neutrino Elastic scattering Observation with NaI (NEON) is an experiment to detect a coherent elastic neutrino-nucleus scattering (CEvNS) using reactor electron antineutrinos. NEON is based on an array of six NaI(Tl) crystals corresponding to a total mass of 15 kg, located at the tendon gallery of the Hanbit nuclear reactor that is 24 m far from the reactor core. The installation of the NEON...
The increased radiation environment and data rate for the High Luminosity Large Hadron Collider (HL-LHC) require upgrades to the readout electronics for the Muon Spectrometer ( MS ) electronics. In this talk, I will present the status of the irradiation studies for the chamber service module (CSM). The CSM is a custom-built front-end electronics board and is responsible for multiplexing data...
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...
This talk discusses recent developments concerning the MiniBooNE anomaly—an excess of low energy electronlike events in Fermilab's Booster Neutrino Beam. The latest results from the MicroBooNE collaboration disfavor an enhancement of low-energy electron neutrino interactions as the entire source of the MiniBooNE excess. However, a joint fit by the MiniBooNE collaboration, presented here,...
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 bottom heavy baryons are studied in the framework of a nonrelativistic quark model. We use the Hypercentral approach to solve the six-dimentional Schrödinger equation of the baryons. Introducing a potential model, the ground state masses and magnetic moments of the $\Sigma_b$ , $\Lambda_b$ , $\Xi_{bc}$ and $\Xi_{bb}$ heavy baryons are calculated. We also investigate the $ b...
Hadronization is a non-perturbative process, which theoretical description can not be deduced from first principles. Modeling hadron formation requires several assumptions and various phenomenological approaches. Utilizing state-of-the-art Computer Vision and Deep Learning algorithms, it is eventually possible to train neural networks to learn non-linear and non-perturbative features of the...
The superweak (SW) force is a minimal, anomaly-free U(1) extension of the standard model (SM), designed to explain the origin of (i) neutrino masses and mixing matrix elements, (ii) dark matter, (iii) cosmic inflation, (iv) stabilisation of the electroweak vacuum and (v) leptogenesis. In this talk we discuss how the parameter space of the model is constrained by providing viable scenarios for...
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 muon system of the CMS detector at CERN plays an important role for many searches of the physics phenomena within and beyond the standard model, in particular the Higgs boson discovery and observation of the Bs0 and B0 muon decays. The next phase of high luminosity LHC (HL-LHC) foresee and increase of the instantaneous luminosity in order to extend the discovery potential of the detector....
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 `Laser-hybrid Accelerator for Radiobiological Applications’, LhARA, is conceived as a uniquely flexible internatonal facility dedicated to the study of a completely new regime of radiobiol- ogy. The ambition of the multidisciplinary collaboration is that the technologies demonstrated in LhARA will be transformative in the delivery of ion beam therapy.
The laser-hybrid approach offers...
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 region of high baryonic densities ($\mu_{B}$) of the QCD phase diagram is the object of several studies, focused on the investigation of the order of the phase transition and the search for the critical point. The rare probes, which include electromagnetic observables and heavy quark production and which are experimentally challenging to access as they require large integrated luminosities...
The Large Hadron Collider (LHC) is the world’s highest energy particle accelerator,
providing ultimately unique opportunities of directly searching for new physics Beyond
the Standard Model (BSM). Massive long-lived particles (LLPs), which are absent in
the Standard Model, can occur in many well-motivated theories of physics BSM. These
new massive LLPs can decay into other particles away...
The ATLAS trigger system includes a Level-1 (L1) trigger based on custom electronics and firmware, and a high level trigger based on off-the-shelf hardware and processing software. The L1 trigger system uses information from the calorimeters and from the muon trigger detectors, consisting of Resistive Plate Chambers in the barrel, and of Thin-Gap Chambers, small-strip Thin-Gap Chambers and...
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 CMS experiment has greatly benefited from the utilization of the particle-flow (PF) algorithm for the offline reconstruction of the data. The Phase II upgrade of the CMS detector for the High Luminosity upgrade of the LHC (HL-LHC) includes the introduction of tracking in the Level-1 trigger, thus offering the possibility of developing a simplified PF algorithm in the Level-1 trigger. We...
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...
During the last 15 years the "Radio MontecarLow (“Radiative Corrections and Monte Carlo Generators for Low Energies”) Working Group, see www.lnf.infn.it/wg/sighad/, has been providing valuable support to the development of radiative corrections and Monte Carlo generators for low energy e+e- data and tau-lepton decays. Its operation which started in 2006 proceeded until the last few years...
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...
Sexaquarks are a hypothetical low mass, small radius uuddss dibaryon which has been proposed recently and especially as a candidate for Dark Matter [1,2]. The low mass region below 2 GeV escapes upper limits set from experiments which have searched for the unstable, higher mass H-dibaryon and did not find it [1].
Depending on its mass, such state may be absolutely stable or almost stable...
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...
My research shows that production, collisions, and decays of matter in space result in the forming of HE particle spectra, which are measured in cosmic ray physics and astrophysics. If we understand how a HE proton produces protons in the collision with another proton (or antiproton), it becomes possible to predict the form of the various particle spectra in astrophysics. LHC experiments can...
Axions, hypothetical particles associated with the spontaneous breaking of a postulated U(1) symmetry, offer a dynamic solution to the strong CP problem, an important puzzle in the standard model (SM). Axions in the mass range of 1 μeV - 10 meV are considered as favored candidates for dark matter. They have extremely weak interactions with the SM fields, making relevant searches exceptionally...
We perform a sensitivity study of an unbinned angular analysis of the $B\to D^{*}\ell\nu_{\ell}$ decay, including the contributions from the right-handed (R.H.) vector current. We show that the Wilson coefficient of the R.H. vector current can be strongly constrained by measuring the normalized angular observables $\langle g_i\rangle$ ($i=1,2,...,11$) without the intervention of the $V_{cb}$ puzzle.
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 experiment DANSS is located on a movable platform below 3.1 GW industrial reactor of Kalininskaya NPP. The detector is a solid state scintillator spectrometer collecting up to 5000 neutrino events per day with the only 2% background. The experiment is already running for 6 years and more than 6 million inverse beta-decay events are already collected. DANSS already explored a large portion...
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...
Large research infrastructures have opened new observational windows, allowing us to study the structure of matter up to the entire Universe. However, society hardly observes these developments through education and outreach activities. This induces a gap between frontier science and society that may create misconceptions about the content, context, and mission of public funded science. In...
In recent years, outreach activities have acquired great importance among the three university missions for the involvement of the non-expert community.
In this context, the “Physics4Teenagers” outreach group of the University of Pavia Physics Department, in northern Italy, designed the “PER me si va ne la fisica recente” experience.
In physics promotion, our major target is usually high...
