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18/12/2022, 08:45
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18/12/2022, 09:15
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Abhay Deshpande (Stony Brook University)18/12/2022, 09:30
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Elke Aschenauer (BNL)18/12/2022, 10:00
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). The EIC will address some of the most profound questions concerning the emergence of nuclear properties by precisely imaging gluons and quarks inside...
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Markus Diefenthaler (JLab)18/12/2022, 11:15
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Bedanga Mohanty (NISER), Shuddha Dasgupta (NISER)18/12/2022, 12:00
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Abhay Deshpande (Stony Brook University)18/12/2022, 12:45
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Swagato Mukherjee18/12/2022, 14:15
To fully realize EIC's goal on 3-dimensional imaging of hadrons complementary lattice QCD results for PDF, GPD, TMD etc. are essential. This talk will provide an overview of some recent progresses in lattice QCD calculations of partonic structures of hadrons.
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Bedanga Mohanty (NISER)18/12/2022, 15:30
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Abhiram Kaushik (University of Zagreb)19/12/2022, 09:15
This talk is mostly based on our recent work [1] where we numerically compute transverse single spin asymmetry (SSA) in SIDIS based on a new mechanism suggested in [2]. In this mechanism, the phase required for the asymmetry is generated from higher order diagrams. Specifically in [2] it was demonstrated that with the $g_T(x)$ quark distribution for the transversely polarized proton, a...
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Chandan Mondal19/12/2022, 09:45
There is a well-known crisis: one of the fundamental properties of the proton, its spin, is not the same as the sum of its constituent quark spins. The gluon’s contribution to the proton spin is nonvanishing and likely sizable. Yet, there remain large uncertainties about the gluon’s contribution and resolving this issue is one of the major goals of the upcoming Electron-Ion-Colliders. We...
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BHEEMSEHAN GURJAR (Indian Institute of Technology Kanpur)19/12/2022, 10:15
In 1988 the European Muon Collaboration (EMC) at CERN shocked the physics community by announcing that the sum of the spins of the three quarks that make up the proton is much less than the spin of the proton itself, later on which is known so-called "proton spin puzzle". Physicists have been unable to answer a seemingly simple question: where does proton spin come from? How the proton’s spin...
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Jaswant Singh (Indian Institute of Technology New Delhi)19/12/2022, 11:15
We use Machine Learning with an event-generator (Sar$t$re) for
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the process: $e \p\rightarrow e'\ p' \ V_M $, $e \ A\rightarrow e'\ A' \ V_M $ .
Sar$t$re uses 3-dimensional look-up tables to generate events
in which the first two moments of the Amplitude are stored. In eA collisions the generation of these lookup tables takes many months. I will present a method, using neural networks, which... -
Marius Utheim19/12/2022, 11:45
General-purpose event generators such as Pythia are programs that model complete particle interactions, including the hard process, parton showers, multiparton interactions, hadronization, etc. The objective of these generators is to provide state-of-the-art predictions for high energy collisions, and are essential for bridging the gap between theoretical models and experimental data. Pythia...
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Soureek Mitra (KIT - Karlsruhe Institute of Technology (DE))19/12/2022, 12:30
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Tanmay Maji (IIT Hyderabad, Hyderabad, India)19/12/2022, 14:15
One of the classic ways of studying QCD events in high-energy experiments is to measure the Event Shape variables e.g., Thrust, Jet Broadening, Angularity etc. which are observables designed to characterize several properties including the geometric shape of hadron distribution in the event. In this talk, we will discuss a more general global event shape "angularity" for deep inelastic...
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Shohini Bhattacharya (Brookhaven National Laboratory)19/12/2022, 14:45
By considering double spin asymmetry (DSA) in exclusive dijet production in $ep$ collisions, we demonstrate for the first time that the $cos(\phi)$ angular correlation between the scattered electron and proton is a direct probe of the gluon orbital angular momentum and its interplay with the gluon helicity. We also make an estimate of the DSA for typical kinematics of the future Electron Ion Collider.
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Amol Pawar19/12/2022, 16:00
We present a calculation of the $\cos2\phi$ azimuthal asymmetry in $e ~p\rightarrow e ~J/\psi ~Jet~ X$, where $J/\psi-Jet$ pair is almost back-to-back in the transverse plane, within the framework of the generalized parton model (GPM) and assuming TMD factorization. This probes the Weisz{\"a}ker-Williams type linearly polarized gluon distribution. We calculate the asymmetry using...
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Charles Joseph Naim19/12/2022, 16:30
We propose in this talk to investigate the QCD dynamics at sPHENIX experiment through two studies:
First, the internal jet structure study provides information about the hadronization process in non-perturbative QCD dynamics. The non-perturbative flavor correlation between pairs of leading and next-to-leading charged hadrons is proposed. The correlation ratio observable $r_{c}$ for protons,...
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Tobias Toll20/12/2022, 09:15
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Arjun Kumar (Indian Institute of Technology Delhi)20/12/2022, 09:45
Tagged-DIS (TDIS) provides a unique opportunity to study the structure of targets which are not readily available. One can study the longitudinal pion structure in a semi-inclusive measurement by measuring the leading neutrons in the far forward direction in addition to the scattered electron in the usual DIS. Theoretically, in the so-called Sullivan process, the cross section in these events...
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Zhoudunming Tu20/12/2022, 10:15
One of the golden measurements at the Electron-Ion Collider (EIC) is to measure the coherent diffractive Vector-Meson (VM) production off heavy nuclei. The measurement is expected to be sensitive to the non-linear gluon dynamics - saturation, and most importantly, it also provides the gluon density distribution of the nucleus. While the measurement was established in the EIC White Paper 10...
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Jai More (INDIAN INSTITUTE OF TECHNOLOGY BOMBAY)20/12/2022, 11:30
First, we give a brief overview of the light-front dressed quark model, per se,
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instead of a proton state, we use a simple composite spin-1/2 state that is a quark dressed with a gluon. It is a perturbative model and has gluonic degrees of freedom. Then we outline the formalism used to evaluate the gravitational
form factors (GFFs) of quarks and gluons in a dressed quark model. We use
the... -
Sabyasachi Ghosh20/12/2022, 12:00
Proton is our stable microscopic platform, allowing four forces - strong, electromagnetic, weak
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and gravity to act in terms of their respective form factors, where the gravitational form factors
describe the hadron’s mass, spin, and D term. Recently, in 2018, the D term has been extracted
from the experiment and pressure distribution inside the proton is sketched. The shocking part of
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Dr Ranjeet Dalal (Guru Jambheshwar University of Science and technology, Hisar)20/12/2022, 12:30
There has been a steady flux of new experimental evidences confirming
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the presence of short-ranged structures inside atomic nuclei, dominated by correlations
between pairs of nucleons. The role of these internal nucleon-nucleon correlations
has been established using various energetic probes like photons, pions, leptons and
hadrons. These correlated structures are essential for... -
Marius Utheim20/12/2022, 14:15
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20/12/2022, 14:35
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Neetika Sharma (Department of Physical Sciences, I K Gujral Punjab Technical University, Kapurthala-144603, Punjab, India.)
We use an anti-de Sitter/Quantum Chromodynamics (AdS/QCD) based holographic light-front wavefunction for the $J/\psi$ meson, in conjunction with the Color dipole model cross-section to investigate the cross-sections data for exclusive $J/\psi$ electroproduction. We have used the updated set of color dipole model parameters fitted to the most recent 2015 high precision HERA data on...
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Swagato Mukherjee
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Abhiram Kaushik (University of Zagreb)
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