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Barbara Pasquini (Istituto Nazionale di Fisica Nucleare)31/10/2023, 09:00
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Zein-Eddine Meziani (Argonne National Laboratory)31/10/2023, 09:10Plenary talk in the main Conference
In this presentation, I will discuss selected highlights in electromagnetic hadron physics since the last edition of EINN held remotely in 2021
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Markus Diehl (Deusches Elektronen-Synchrotron DESY)31/10/2023, 09:50Plenary talk in the main Conference
I give a broad overview of recent theory developments and open questions for a subset of topics discussed at this conference. The focus lies on different ways of 'imaging' the nucleon, from form factors to parton distributions.
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Dr Elia Bottalico (University of Liverpool)31/10/2023, 11:00Plenary talk in the main Conference
The Muon g$-$2 experiment at Fermilab aims to measure the anomalous magnetic moment of the muon, $a_\mu = (g-2)/2$, with a final accuracy of 140 parts per billion, representing one of the most precise tests of the Standard Model. The experiment's first result from the 2018 dataset, Run 1, was published in 2021 and confirmed the previous result obtained at Brookhaven National Laboratory with a...
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Zoltan Fodor (University of Wuppertal)31/10/2023, 11:30Plenary talk in the main Conference
Over twenty years ago, in an experiment at Brookhaven National Laboratory, physicists detected what seemed to be a discrepancy between measurements of the muon’s magnetic moment and theoretical calculations of what that measurement should be, raising the tantalizing possibility of physical particles or forces as yet undiscovered. The Fermilab team has announced 2021 and then in 2023 that their...
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Sylvester Joosten (Argonne National Laboratory)31/10/2023, 12:00Plenary talk in the main Conference
Heavy quarkonium production serves as a powerful tool to investigate the gluonic structure of the nucleon. The latest generation of experiments being conducted at Jefferson Lab in the 12 GeV era use near-threshold J/ψ production to explore the mass structure of the nucleon. In this presentation, I will focus on both current and forthcoming experiments aimed at unraveling the proton’s gluonic...
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Dr Jim Yeck (Brookhaven National Laboratory)31/10/2023, 15:00Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
An overview of the progress preparing the Electron-Ion Collider (EIC) for construction. The presentation addresses the EIC design requirements, conceptual design, and construction schedule. Current efforts to promote international engagement and collaboration will be described, including opportunities for contributions to the design and construction of the accelerators and collaboration on...
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Valentin Moos (Univ. of Regensburg)31/10/2023, 15:00Talk in workshop 2: "QCD analysis of nucleon structure"
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Marc Schlegel (University of Tuebingen)31/10/2023, 15:25Talk in workshop 2: "QCD analysis of nucleon structure"
We present a brief report on our ongoing efforts to calculate the transverse single-nucleon spin asymmetry of single-inclusive jet production in lepton-nucleon collisions at NLO accuracy within the collinear twist-3 factorization framework. This observable can very well be measured at a future Electron-Ion Collider (EIC). Such data will give new insight into both the partonic structure of the...
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Christoph Montag (BNL)31/10/2023, 15:30Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
The design of the electron-ion collider (EIC) at Brookhaven National Laboratory
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is well underway, aiming at a peak electron-proton luminosity of 10^34 cm^-2
sec^-1. This high luminosity and wide center-of-mass energy range from 29 to
141 GeV (e-p) require innovative solutions to maximize the performance of the
machine, which makes the EIC one of the most challenging accelerator... -
Leonard Gamberg (Penn State University)31/10/2023, 15:50Talk in workshop 2: "QCD analysis of nucleon structure"
We present our results on transverse momentum dependent factorization and resummation at sub-leading power in Drell-Yan and semi-inclusive deep inelastic scattering. In these processes the sub-leading power contributions to the cross section enter as a kinematic power correction to the leptonic tensor, and the kinematic, intrinsic, and dynamic sub-leading contributions to the hadronic tensor....
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Bernd Surrow (Temple University)31/10/2023, 16:00Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
Understanding the properties of nuclear matter and its emergence through the underlying partonic structure and dynamics of quarks and gluons requires a new experimental facility in hadronic physics known as the Electron-Ion Collider (EIC).
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The EIC will address some of the most profound questions concerning the emergence of nuclear properties by precisely imaging gluons and quarks inside... -
Simone Bacchio31/10/2023, 16:15Talk in workshop 2: "QCD analysis of nucleon structure"
We present results for the nucleon axial and pseudoscalar form factors extrapolated at the continuum limit using three $N_f = 2 + 1 + 1$ twisted mass fermion ensembles with all quark masses tuned to their physical values. Convergence to the ground state matrix elements is assessed using multi-state fits. We study the momentum dependence of the three form factors and check the partially...
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Matt Posik (Temple University)31/10/2023, 17:00Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
On behalf of the ePIC Collaboration
The future Electron-Ion Collider (EIC) at Brookhaven National Laboratory will collide polarized electrons with polarized proton/ions. The electron Proton and Ion Collider (ePIC) detector is being designed as the day one EIC detector. The EIC physics program requires precision tracking and particle identification (PID) capabilities that extend over a large...
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Dr Maria Zurita (Complutense University of Madrid)31/10/2023, 17:00Talk in workshop 2: "QCD analysis of nucleon structure"
In global extractions of Transverse momentum dependent (TMD) distributions, the limit of small transverse distances is constrained using the matching to collinear parton density functions (PDF). Naturally, the TMDPDFs depend on the baseline PDF set used certain features of the former might be due to the latter, rather than genuinely due to TMD behaviour f the partons. To shed light on the...
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Werner Vogelsang (Univ. Tuebingen)31/10/2023, 17:25Talk in workshop 2: "QCD analysis of nucleon structure"
We review the current status of the nucleon's helicity PDFs. We describe
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recent progress on "global" analysis of the distributions, highlighting
advances on the theoretical side especially in terms of higher-order
perturbative calculations. We discuss the relevance of these advances
for the spin program at the future EIC. -
Roberto Preghenella (Istituto Nazionale di Fisica Nucleare)31/10/2023, 17:30Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
The ePIC detector is being designed as a general-purpose detector for the Electron-Ion Collider (EIC) to deliver the full physics program. One of the key challenges at the EIC is particle identification (PID), which requires excellent separation of pions, kaons, and protons over a wide phase space with significant pion/electron suppression. To address this challenge, ePIC utilises multiple...
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Giannis Koutsou (The Cyprus Institute)31/10/2023, 17:50Talk in workshop 2: "QCD analysis of nucleon structure"
We present results for the axial, tensor, and scalar charges of the nucleon using lattice QCD simulations of twisted mass fermions with two degenerate light, a strange, and a charm quark, with masses tuned to their physical values (physical point simulations). The axial charge is well known experimentally and therefore provides for an important benchmark of our methodology, while the scalar...
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David Hornidge (Mount Allison University)31/10/2023, 18:00Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
This talk will cover some of the electromagnetic calorimetry plans for the ePIC detector with a concentration on the design of the central barrel calorimeter based on the current GlueX BCAL at JLab. The requirements (as specified in the ePIC Project) include energy resolution of 10%/$\sqrt{E} \oplus (2-3)$% and electron-pion suppression great than $10^3$, which will be comfortably met by a...
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Dimitra Pefkou (UC Berkeley)31/10/2023, 18:10Talk in workshop 2: "QCD analysis of nucleon structure"
The gravitational form factors (GFFs) of hadrons are related to the matrix elements of the energy-momentum tensor of QCD. In recent years, the proton and pion GFFs have been constrained for the first time from experimental measurements. We compute the quark and gluon GFFs of the pion and the nucleon in the kinematic region $0 < -t < 2~\text{GeV}^2$ on a clover improved lattice QCD ensemble...
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Achim Denig (JGU Mainz)01/11/2023, 09:00Plenary talk in the main Conference
The Mainz Energy-Recovery Superconducting Accelerator MESA, currently under construction at the Institute of Nuclear Physics at Mainz, provides the basis for precision experiments in the areas of nuclear, hadron, and particle physics. In this talk, we report on the comprehensive physics program of the three fixed-target experiments prepared for MESA: (i) MAGIX, (ii) P2, and (iii) DarkMESA....
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Paola Gianotti (LNF)01/11/2023, 09:30Plenary talk in the main Conference
Dark matter exploration is become a central or side topic of many experiments at particle accelerators. Even if this approach, up-to-now, has not produced evidences, it helped in setting stringent limits on the characteristics of dark matter.
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In this panorama is inserted the Positron Annihilation into Dark Matter Experiment (PADME) ongoing at the Laboratori Nazionali di Frascati of INFN.... -
Caroline Riedl (University of Illinois at Urbana-Champaign)01/11/2023, 10:00Plenary talk in the main Conference
A summary of experimental measurements unveiling spin-dependent nucleon structure prior to the arrival of the Electron-Ion Collider is given. Results from fixed-target experiments at Jefferson Lab, CERN, and DESY and collider experiments from RHIC will be presented. The measurements will be discussed in the context of transverse proton or parton spin and transverse parton momenta (TMDs), and...
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Pavel Nadolsky (Southern Methodist University)01/11/2023, 11:00Plenary talk in the main Conference
In the first part of the talk, I will review the recent progress on nucleon parton distributions in the global QCD analysis. In the second part, I will discuss the important role of epistemic uncertainties on PDFs in the increasingly common situation when other experimental and theoretical uncertainties are small. The AI techniques may complicate, rather than simplify, estimation of such...
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Michael Ramsey-Musolf01/11/2023, 11:30
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saori pastore (Washington University in St. Louis)01/11/2023, 12:00Plenary talk in the main Conference
In this talk, I will report on recent progress in Quantum Monte Carlo calculations of electron and neutrino interactions with nuclei in a wide range of energy and momentum transfer and their connections to current experimental efforts in fundamental symmetries and neutrino physics.
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Giacomo Magni (Nikhef, VU Amsterdam)01/11/2023, 15:00Talk in workshop 2: "QCD analysis of nucleon structure"
The theory of the strong force, Quantum Chromodynamics, describes the proton in terms of quarks and gluons. The proton is a bound state of two up and one down quark, but quantum theory predicts that in addition there is an infinite number of quark-antiquark pairs. Both light and heavy quarks, whose mass is respectively smaller or bigger than the proton’s, are revealed inside the proton in...
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Silvia Niccolai (IPN Orsay)01/11/2023, 15:00Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
Generalized Parton Distributions (GPDs) are nowadays the object of an intense effort of research, in the perspective of understanding nucleon structure. They describe the correlations between the longitudinal momentum and the transverse spatial position of the partons inside the nucleon and they can give access to the contribution of the orbital momentum of the quarks and gluons to the nucleon...
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Dr Valerio Bertone (CEA Paris-Sclay)01/11/2023, 15:25Talk in workshop 2: "QCD analysis of nucleon structure"
In this contribution, I will present a recomputation of the evolution kernels of generalised parton distributions (GPDs) at one-loop accuracy for all of the three possible leading-twist polarisations: unpolarised, longitudinally polarised, and transversely/linearly polarised.
I will discuss the analytic and numerical properties of these kernels presenting a number of numerical results for...
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Dave Gaskell01/11/2023, 15:30Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
Beam polarimetry will play an important role in meeting the goals of the planned EIC physics program. However, the EIC beam properties will make achieving the level of precision required challenging for both electron and hadron beam polarimetry.
In this talk, I will give a brief overview of the techniques used to measure electron and hadron beam polarization at high energies, and discuss...
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Vladimir Braun (Univ. of Regensburg)01/11/2023, 15:50Talk in workshop 2: "QCD analysis of nucleon structure"
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Krzysztof Piotrzkowski (AGH University of Science and Technology)01/11/2023, 16:00Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
Precise measurements of the electron-hadron cross sections are the corner stone of scientific program at the future Electron-Ion Collider, hence the high demands towards the EIC luminosity measurements – at least a 1% accuracy is required for the absolute luminosity determination and only a 0.01% uncertainty for the relative, bunch-to-bunch, luminosity measurements. As was demonstrated at HERA...
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Rui Zhang (Argonne National Laboratory)01/11/2023, 16:15Talk in workshop 2: "QCD analysis of nucleon structure"
We present the first direct lattice QCD calculation of the x-dependent pion distribution amplitudes on domain wall gauge ensembles at physical pion mass. We use the large momentum effective theory to directly calculate the x-dependence of meson DAs with several recently developed self-consistent precision control methods. We perform a leading renormalon resummation to remove linear...
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Shohini Bhattacharya (BNL)01/11/2023, 17:00Talk in workshop 2: "QCD analysis of nucleon structure"
In this presentation, we delve into the calculation of perturbative corrections for the Deeply Virtual Compton Scattering process within a unique kinematic domain, specifically where $t \gg \Lambda^2_{\rm QCD}$, with $t$ representing the change in nucleon momentum following scattering. Working within this unconventional domain necessitated a distinctive approach, particularly dealing with...
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Andrew Puckett (University of Connecticut)01/11/2023, 17:00Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
The investigation of nucleon elastic electromagnetic form factors (EMFFs) at large momentum transfer has generated a large and increasing amount of experimental and theoretical interest over the last several decades. EMFFs provide precision benchmarks for theoretical modeling of nucleon structure and ab initio predictions in lattice QCD. Additionally, precise knowledge of the form factors at...
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Ivan Pedron (KIT)01/11/2023, 17:25Talk in workshop 2: "QCD analysis of nucleon structure"
In this talk I present our work on the calculation of exclusive single jet and dijet production cross sections in polarized DIS. The NLO accuracy results are obtained with our extension of the dipole subtraction method to account for initial state polarized processes. In the case of single jet production, we also reach NNLO accuracy by applying the projection-to-Born (P2B) subtraction method....
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Bernd Surrow (Temple University)01/11/2023, 17:30Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
The transversity distribution function of quarks, $h_1^{q}(x)$, encapsulates the transverse spin structure of the proton at leading twist, where $x$ represents the longitudinal momentum fraction carried by the quark $q$. Extracting $h_1^{q}(x)$ poses a formidable challenge due to its chiral-odd nature. Measurements of final-state hadron pairs in transversely polarized proton-proton...
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Oleksandr Tomalak (Los Alamos National Laboratory)01/11/2023, 17:50Talk in workshop 2: "QCD analysis of nucleon structure"
Charged-current quasielastic neutrino scattering is the signal process in neutrino oscillation experiments and requires precise theoretical prediction for the analysis of modern and future experimental data, starting with the nucleon axial-vector form factor. In this talk, I compare a new MINERvA measurement of this form factor with lattice-QCD calculations and deuterium bubble-chamber data,...
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William Briscoe (The George Washington University)01/11/2023, 18:00Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
During the past several decades a large quantity of high-quality mesonic photo- and electro-production data have been measured at electromagnetic facilities worldwide. By contrast, meson-beam data for these same final states are mostly outdated, largely of poorer quality, or even non-existent, especially those involving spin asymmetries and polarizations. Thus, existing meson beam results...
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Adam Hobart (IJCLab CNRS-IN2P3)01/11/2023, 18:10Talk in workshop 2: "QCD analysis of nucleon structure"
A deeper understanding of the nucleon structure can be achieved through the study of Generalized Parton Distributions (GPDs).
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The particularity of GPDs is that they convey an image of the nucleon structure where the longitudinal momentum and the
transverse spatial position of the partons inside the nucleon are correlated. Moreover, GPDs allow the quantification,
via Ji's sum rule, of the... -
Andreas Metz (Department of Physics, Temple University, Philadelphia)02/11/2023, 09:00Plenary talk in the main Conference
Over the last decades, tremendous progress has been made in understanding the 3D partonic structure of strongly-interacting systems like the nucleon in terms of generalized parton distributions (GPDs) and transverse-momentum-dependent parton distributions (TMDs). In this presentation, we briefly describe the status of this field and highlight some recent developments.
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Ralf Seidl (RIKEN)02/11/2023, 09:30Plenary talk in the main Conference
Fragmentation functions describe the formation of confined, final state hadrons out of asymptotically-free, high-energetic partons. They therefore help us understand the process of confinement. Additionally, they are also the most important tool to learn about the flavor, spin and transverse momentum of the fragmenting partons and thus access the corresponding parton distribution functions in...
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Joseph Karpie (Jefferson Lab)02/11/2023, 10:00Plenary talk in the main Conference
Many interactions with nuclei can be described in terms of convolutions of universal parton distributions. These parton distributions describe the way quarks and gluons conspire to create the hadrons. Over the past decade these distributions have been inferred from matrix elements calculating with Lattice QCD. These matrix elements are similar convolutions of the parton distribution as cross...
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Catarina Quintans02/11/2023, 11:00Plenary talk in the main Conference
AMBER is a new fixed-target experiment at the CERN/SPS for the study of
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Hadron Physics, thanks to a versatile beamline capable of providing muon and hadron beams over a wide energy range and a multipurpose modular spectrometer. The emergence of hadron mass phenomenom, central for our undertanding of QCD, can be experimentally addressed from the AMBER measurements of hadron radii,... -
Eric Voutier (CNRS/IN2P3/IJCLab - UPS)02/11/2023, 11:30Plenary talk in the main Conference
The Generalized Parton Distributions (GPDs) paradigm has profoundly renewed the understanding of the nucleon structure. As describing the correlations between partons, GPDs allow us to access static and dynamical information about the nucleon structure, ultimately learning about the mechanics of Quantum Chromodynamics. This comprises the total angular momentum of the nucleon carried by the...
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Nikos Sparveris02/11/2023, 12:00Plenary talk in the main Conference
The polarizabilities of a composite system such as the proton are elementary structure constants. They describe its response to an external electromagnetic (EM) field and quantify the deformation of the charge and magnetization distributions inside the proton caused by the electric or magnetic field, respectively. When studied through the virtual Compton scattering process, the virtuality of...
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Abhay Deshpande (Stony Brook University)02/11/2023, 15:00
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Swagato Mukherjee (Assistant Physicist)02/11/2023, 15:00Talk in workshop 2: "QCD analysis of nucleon structure"
I will present some recent lattice QCD results on parton distribution functions, generalized parton distribution functions and distribution amplitudes. I will focus on results obtained using perturbative matching coefficients computed beyond the next-to-leading order in the strong coupling, specifically using next-to-next-to-leading order matching coefficients as well as incorporating various...
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Martha Constantinou (Temple University)02/11/2023, 15:25Talk in workshop 2: "QCD analysis of nucleon structure"
Generalized parton distributions (GPDs) are important quantities that characterize the 3-D structure of hadrons and complement the information extracted from TMDs. They provide information about the partons’ momentum distribution and also on their distribution in position space. The non-perturbative part of the cross-section of high-energy processes may be expanded in terms of the process's...
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Pawel Nadel-Turonski (CFNS Stony Brook)02/11/2023, 15:30Talk in workshop 1 "QCD at the EIC: Experimental Opportunities and Detector Challenges"
In its report, the DPAP observed that ``there is significant support in the community and from the panel for a second general-purpose detector system to be installed in IR8 when resources are available.'' Such a detector would unlock the full discovery potential of the EIC by providing cross checks of results from ePIC, and reduce the combined systematic uncertainties. And in combination with...
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Ferenc Pittler (The Cyprus Institute)02/11/2023, 15:50Talk in workshop 2: "QCD analysis of nucleon structure"
In this presentation we would like to determine the properties of the lightest resonance in
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the baryonic sector of QCD: the Delta(1232) resonance. Using two-hadron operators we calculate the finite volume QCD energy spectrum of $\pi-N$ in the $p$-wave. Using Luescher formalism we can predict the mass and the width of the delta resonance. In our analysis we probe the Luescher formula by... -
Yan Li (University of cyprus)02/11/2023, 16:10Talk in workshop 2: "QCD analysis of nucleon structure"
We investigate contributions of excited states to nucleon matrix elements by studying the two- and three-point functions using nucleon and pion-nucleon interpolating fields. This study is made using twisted mass fermion ensembles with pion masses 346 MeV and 131 MeV. We construct an improved nucleon interpolating field with the generalized eigenvalue problem of two-point functions, and use it...
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Luis Alberto Rodriguez Chacon (The Cyprus Institute)02/11/2023, 17:00
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Cornelis Mommers (Johannes Gutenberg University Mainz)02/11/2023, 17:30
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Sotiris Pitelis (Johannes Gutenberg University of Mainz)02/11/2023, 18:00
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Zhoudunming Tu (BNL)03/11/2023, 09:00Plenary talk in the main Conference
The STAR experiment at the Relativistic Heavy-Ion Collider has recently released findings regarding exclusive coherent and incoherent photoproduction of $J/\psi$ mesons in Au+Au ultra-peripheral collisions (UPCs). In this talk, I will delve into the preliminary findings and examine how they influence our understanding of nuclear parton density within heavy nuclei and the event-by-event density...
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Felix Ringer (ODU / JLab)03/11/2023, 09:30Plenary talk in the main Conference
Machine learning and AI are rapidly growing areas of research offering various avenues for exploration in high-energy nuclear physics. Novel tools including generative modeling, regression, and classification are poised to have a significant impact on theoretical and experimental research efforts. In this talk, I will review recent progress in the context of hadron structure, spin physics,...
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Andrey Kotov (Juelich Forschungszentrum)03/11/2023, 10:00Plenary talk in the main Conference
Different parts of the QCD phase diagram in the plane temperature - baryon density are expected
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to be relevant for early stages of the Universe, neutron stars, heavy ion collision experiments.
From theoretical point of view a lot of information about the QCD phase diagram and QCD thermodynamics
can be extracted using lattice ab-initio methods. In this talk I present an overview of
the... -
Karl Jansen (DESY Zeuthen, The Cyprus Institute)03/11/2023, 11:00Plenary talk in the main Conference
Quantum computing is rapidly emerging as a new method of scientific computing. It has the potential to solve problems much faster than it is possible with classical computers. Examples are applications in logistics, drug design, medicine finances and many more. In addition, with quantum computers problems can be tackled that are very hard or even impossible to address with classical...
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Prof. Annalisa D'Angelo (Universita' di Roma Tor Vergata and INFN Roma Tor Vergata)03/11/2023, 11:30Plenary talk in the main Conference
The study of baryonic excited states provides fundamental information on the internal structure of the nucleon and on the degrees of freedom that are relevant for QCD at low energies. N* are composite states and are sensitive to details of the how quarks are confined. Meson photo-and electro-production reactions have provided complementary information on light quark baryon spectroscopy for...
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Oleksandra Deineka (Johannes Gutenberg University of Mainz)03/11/2023, 12:00Plenary talk in the main Conference
We present a data-driven analysis of the S-wave $\pi\pi\to\pi\pi$ and $\pi K \to \pi K$ reactions using the partial-wave dispersion relation. The contributions from the left-hand cuts are accounted for in a model-independent way using the Taylor expansion in a suitably constructed conformal variable. The fits are performed to experimental and lattice data. Our central result is the hadronic...
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Abhay Deshpande (Stony Brook University)04/11/2023, 09:00
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Werner Vogelsang (Univ. Tuebingen)04/11/2023, 09:45
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Marc Vanderhaeghen (University Mainz)04/11/2023, 11:00
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Haiyan Gao (Brookhaven National Laboratory)04/11/2023, 11:40Plenary talk in the main Conference
The US Nuclear Physics community recently completed its Long Range Plan process. The US Nuclear Science Advisory Committee (NSAC), a federal advisory committee appointed jointly by the US Department of Energy, Office of Science, and Directorate for Mathematical and Physical Sciences, the US National Science Foundation, approved the 2023 Long Range Plan "A New Era of Discovery - 2023 Long Range...
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Barbara Pasquini (Istituto Nazionale di Fisica Nucleare), Cynthia Keppel (Thomas Jefferson National Accelerator Facility)04/11/2023, 12:20
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Luis Alberto Rodriguez Chacon (The Cyprus Institute)Poster
We compute the quark and gluon momentum fraction for the pion and kaon. This is done by employing lattice quantum chromodynamics simulations. We use three gauge ensembles of twisted mass fermions generated by the Extended Twisted Mass Collaboration with two degenerate light quarks and non-degenerate strange and charm quarks. All quark masses are tuned to approximately their physical values....
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Mr Pranay Naredi (The Cyprus Institute)Poster
We explore the phase structure of the lattice Schwinger model in the presence of a toplogical $\theta$-term, a regime in which conventional Monte Carlo simulations suffer from the sign problem, using the variational quantum eigensolver (VQE). Constructing a suitable variational ansatz circuit for the lattice model using symmetry-preserving 2-qubit gates, we perform classical simulations...
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Aleksandr Pustyntsev (Johannes Gutenberg University of Mainz)Poster
Axions and axion-like particles (ALPs) are one of the most widely discussed extensions of the Standard Model when it comes to the strong CP problem and dark matter candidates. Current experiments are focused on the indirect searches of invisible pseudoscalars in a wide parameter range. In this paper we investigate limits on ALP mass, and its couplings to photons and leptons from 3-photon...
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Frederic Noël (ITP, AEC, Uni Bern)Poster
Lepton-flavor-violating decays of light pseudoscalars, $P = \pi^0, \eta,\eta' \to \mu e$, are stringently suppressed in the Standard Model up to tiny contributions from neutrino oscillations, so that their observation would be a clear indication for physics beyond the Standard Model.
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However, in effective field theory such decays proceed via axial-vector, pseudoscalar, or gluonic operators,... -
Syed Muhammad Ali Hassan (The Cyprus Institute)Poster
Chern-Simons gauge theories have a deep and broad impact on a wide range of physics research, ranging from parity anomalies in quantum field theory to the theory of the integer and fractional quantum Hall effects, and the effective field theory description of chiral spin liquids in condensed matter physics. Despite the fact that Chern-Simons theories are well understood as a continuum field...
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Jacopo Tarello (The Cyprus Institute)Poster
We evaluate the transverse momentum-dependent parton distribution functions for the pion and kaon by computing the quasi-beam functions with asymmetric staple-shaped quark bilinear operators and combine it with the soft function and Collins-Soper kernels. These are computed within lattice QCD using an $\mathcal{N}_f= 2 + 1 + 1$ twisted mass fermion ensemble of lattice size $24^3 \times 48$,...
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Sotiris Pitelis (Johannes Gutenberg University of Mainz)Poster
Spectroscopy experiments at the precision frontier allow us to study low-energy nuclear structure, test bound-state QED, refine fundamental constants, and potentially find New Physics. As the experimental uncertainties are continuously improved, theory predictions need to follow suit.
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The finite-size corrections to the spectra of hydrogen-like atoms are often expanded in terms of the moments... -
Saskia Plura (JGU Mainz)Poster
The search for Dark Matter is an integral part of New Physics searches, however, Dark Matter has yet to be observed directly. Theoretical models provide a large parameter space for Dark Matter and allow for different properties of the particles. Models incorporating so-called portal interactions, where Dark Matter interacts with Standard Model particles through a mediator particle, are of...
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Viacheslav Tsaran (JGU Mainz)Poster
Coherent pion photoproduction on nuclei is an efficient tool for studying nucleon density and determining neutron skin thickness. However, a reliable description of pion scattering and other medium effects is needed for these purposes. We build a universal model describing both pion scattering and photoproduction on spin-zero nuclei within the same framework. We develop second-order momentum...
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Bhavna Prasad (The Cyprus Institute)Poster
A well-known challenge when simulating Lattice Gauge theories (LGT) is so-called critical slowing down, which refers to the exponential increase of the autocorrelation time as the lattice spacing is reduced and approaches the continuum limit. Previously, normalizing flows, combined with Lüscher’s trivializing maps, have been proposed as an alternative approach to Hybrid Monte Carlo (HMC),...
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Yasemin Schelhaas (JGU Mainz)Poster
The anomalous magnetic moment of the muon $a_\mu=(g_\mu-2)/2$ is one of the most precisely measured quantities in modern physics. However, there is a sizable discrepancy between the Standard Model (SM) prediction of the Muon $g-2$ Theory Initiative and the experimental average of the latest direct measurements at BNL and FNAL. This discrepancy is known as the Muon $g-2$ puzzle. For the SM...
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Max Lellmann (JGU Mainz)Poster
The anomalous magnetic moment of the muon, $a_\mu = (g-2)_\mu/2$, is one of the most precisely measured observables of the Standard Model. However, its value shows a sizeable discrepancy to the Standard Model prediction. It is still under discussion whether this discrepancy is a hint for New Physics or a proof for the limited understanding of strong interaction at low energies. To get a better...
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Phoebe SharpPoster
Short Range Correlations (SRCs) are a phenomenon found in all nuclei where two nucleons form a strongly interacting, close-proximity pair in the nucleus, leading to a large relative momentum between the nucleons. Electron-scattering experiments, many of them conducted at Jefferson Lab, have determined that the prevalence of SRCs increase with nuclear size, and furthermore that most SRCs form...
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Panagiotis Kalamidas (JGU)Poster
Over the past two decades a plethora of new exotic states containing heavy quarks have been discovered above open heavy-flavor thresholds.
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For these states, which cannot be interpreted as quark anti-quark bound states, a number of different explanations have been put forward in terms of tetraquark states based on QCD diquarks, QCD hybrids, hadronic molecules, among others. In the past couple... -
Ophir Ruimi (University of Mainz)Poster
Neutrons play a dominant role in the stellar nucleosynthesis of heavy elements. We review a scheme for the experimental determinations of neutron-induced reaction cross sections using a high-intensity neutron source based on the 18O(p,n)18F reaction with an 18O-water target at SARAF’s upcoming Phase II. The quasi-Maxwellian neutron spectrum with effective thermal energy kT ≈ 5 keV,...
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Cornelis Mommers (Johannes Gutenberg University Mainz)Poster
We propose a novel direct search experiment for the hypothetical X17 particle. In recent years researchers from the ATOMKI Collaboration have reported anomalous signals around 17 MeV in excited 8Be, 4He and 12C nuclear decays via internal pair creation. On the theory side this has set off a flurry of research, which found that the anomalies could be explained by a new light (~17 MeV)...
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