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Wenliang Li (College of William and Mary)7/29/21, 10:00 AM
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Andrei Seryi (JLAB)7/29/21, 10:05 AM
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Gunn Tae Park (Jefferson Lab)7/29/21, 11:00 AM
I will present a developing research activity for an application of a harmonic kicker to a RCS injection scheme of the EIC.
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Carlos Ayerbe Gayoso (Mississippi State University)7/29/21, 11:15 AM
The use of organic scintillating fibre arrays with opto-electronics devices combines the fast response of scintillating detectors with the granularity of tracking devices and the advantage of reduced cost and relatively simple construction. In this talk, I will present examples of this detector and potential uses of it in the EIC.
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Manoj Jadhav (Argonne National Laboratory)7/29/21, 11:30 AM
The Timing Optimized PID Silicon Detector for the EIC (TOPSiDE) is Argonne's proposed central detector concept for the Electron-Ion Collider, with its physics goals of perturbative and non-perturbative Quantum ChromoDynamics (QCD) studies of the structure of nucleons and nuclei. It requires high precision tracking, good vertex resolution, and excellent particle identification with a timing...
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Dr Nilanga Wickramaarachchi (The Catholic University of America)7/29/21, 11:45 AM
Excellent particle identification (PID) is one of the key requirements for the central detector of the Electron-Ion collider (EIC). Identification of the hadrons in the final state is important to study how different quark flavors contribute to nucleon properties. A detector with a radial size of only 7-8 cm, which uses the principle of Detection of Internally Reflected Cherenkov light (DIRC),...
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Florian Hauenstein (Old Dominion University)7/29/21, 12:00 PM
Understanding the modification of quarks in nucleons within nuclei (EMC effect) is a longstanding open question in nuclear physics. Recent experimental results from electron scattering at Jefferson Lab strengthen the correlation between the EMC effect and nucleon-nucleon short-range correlated pairs (SRC) within nuclei. That means that the EMC effect is probably driven by the high-momentum...
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Anh Dung Le (CPHT, CNRS Ecole Polytechnique, IP Paris)7/29/21, 12:35 PM
We study the diffractive dissociation of a virtual photon in the scattering off a large nucleus at high energies in the QCD dipole picture in which the photon is conveniently represented by an onium. In a well-defined parametric regime, the nuclear scattering of the onium is triggered by large-dipole fluctuations in the course of its rapidity evolution in the form of color dipole branching,...
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Dien Nguyen (MIT)7/29/21, 12:50 PM
The spin structure function of the neutron is traditionally determined by measuring the spin asymmetry of inclusive electron deep inelastic scattering (DIS) off polarized 3He nuclei. In such experiments, nuclear corrections are significant and must be treated carefully in the interpretation of experimental data. Here we study the feasibility of suppressing model dependencies by tagging both ...
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Dr Jennifer Rittenhouse West (Berkeley Lab and the EIC Center at Jefferson Lab)7/29/21, 1:05 PM
Quantum chromodynamics degrees of freedom are proposed to explain various puzzling results in nuclear physics. The 1983 EMC experiment discovery of unexpected quark behavior in nuclei has been investigated in great depth both experimentally and theoretically since that time. The viability of quark-quark bonds across nucleons provides an explanation for unusual quark behavior when the quark...
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Medani Sangroula (Brookhaven National Laboratory)7/29/21, 1:20 PM
The Electron-Ion Collider (EIC) to be built at Brookhaven National Laboratory is a high luminosity accelerator facility colliding polarized electron beam with different ion species ranging from lighter nuclei (proton, deuterium) to heavier nuclei (gold, uranium). Design of a stripline injection kicker for the Hadron Storage Ring (HSR) of EIC for beams with beam rigidity of 81 T-m poses some...
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Richard Trotta (The Catholic University of America)7/29/21, 1:45 PM
The space and momentum distribution of hadronic constituents (gluons, sea quarks) inside the nucleon is of utmost importance in studies of QCD. Deeper considerations of the lightest mesons (pions, kaons) could provide insights into many questions that plague modern QCD studies. Pions and Kaons are connected to the Goldstone modes of dynamical chiral symmetry breaking, making them critical...
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Jose Manuel Morgado Chávez (Universidad de Huelva)7/29/21, 2:00 PM
The description of hadronic structure in terms of quark and gluon degrees of freedom is an open subject in physics. Great efforts are being devoted to it on both the theoretical and experimental sides. Triggered by existing plans to build new experimental facilities, and the need to properly interpret the data that are to come, interest into the zoology of parton distribution functions is...
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Brandon Kriesten (University of Virginia)7/29/21, 2:15 PM
Studying the role of gluonic observables in exclusive scattering processes is essential as new physics programs, such as an electron ion collider, are planned in unprecedented kinematic regimes. We present a parameterization of gluon generalized parton distributions (GPDs) calculated using a reggeized spectator model. This parameterization is constrained using a combination of lattice QCD form...
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Wenliang Li (William & Mary)7/29/21, 2:30 PM
The recent exclusive backward-angle electroproduction of omega from Jefferson Lab Hall C electron-proton fixed-target scattering experiments above the resonance region hints at a new domain of applicability of QCD factorization in a unique u-channel kinematics regime. Thanks to this pioneering effort, the interest in studying nucleon structure through u-channel meson production observables has...
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Zachary Sweger (UC Davis)7/29/21, 2:45 PM
Backward ($u$-channel) production of vector mesons in electron-ion collisions is an under-studied mechanism with interesting physics implications. Backward-production reactions are characterized by a small Mandelstam $u$ compared to forward production's small Mandelstam $t$. The result of this difference in reaction channels is that the products of backward production are a proton at...
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Andrea Signori (University of Pavia and Jefferson Lab)7/30/21, 10:00 AM
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John Terry (UCLA)7/30/21, 10:40 AM
We perform the first simultaneous global QCD extraction of the transverse momentum dependent (TMD) parton distribution functions and the TMD fragmentation functions in nuclei. This analysis allows us to extract the three-dimensional information of the partonic structure of nuclei as well as the three-dimensional information for hadron formation in a nuclear medium. In this analysis, we take...
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Francesco Giovanni Celiberto (ECT*/FBK Trento & INFN-TIFPA)7/30/21, 10:55 AM
We present explorative analyses of the 3D gluon content of the proton via a study of polarized T-odd gluon TMDs at twist-2, calculated in a spectator model for the parent nucleon. Our approach encodes a flexible parameterization for the spectator-mass density, suited to describe both moderate and small-x effects. All these prospective developments are relevant in the investigation of the gluon...
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Sooraj Radhakrishnan7/30/21, 11:10 AM
Heavy quark production in deep inelastic scattering proceeds via the Boson Gluon Fusion process and thus are ideal tools to constrain the gluon distribution functions in the nucleon/ion probed. Measurement of heavy flavor hadron pair production in deep inelastic scattering processes provides access to the transverse kinematics of the gluon and provide unique constraints to the gluon transverse...
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Matthew Kelsey (Wayne State University)7/30/21, 11:25 AM
Measurements of hard probes such as heavy flavor in deep inelastic scatterings will be an essential component to the EIC physics program and are one of the detector R\&D driving aspects. In this talk we will present the projected statistical precision of open charm hadron production through exclusive hadronic channel reconstruction with a silicon detector concept currently being developed...
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Haowu Duan (North Carolina State University)7/30/21, 12:10 PM
To study quantum properties of the hadron wavefunction at small x, we derived the reduced density matrix for soft gluons in the CGC framework. We explicitly showed that the reduced density matrix is not diagonal in the particle number basis. The off-diagonal components are usually ignored in the conventional parton model. We thus defined the density matrix of ignorance by keeping only the part...
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Yair Mulian (Jyvaskyla University)7/30/21, 12:25 PM
Using the CGC effective theory together with the hybrid factorisation, we study forward dijet production in proton-nucleus collisions beyond leading order. In this paper, we compute the "real" next-to-leading order (NLO) corrections, i.e. the radiative corrections associated with a three-parton final state, out of which only two are being measured. To that aim, we start by revisiting our...
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Fanyi Zhao (UCLA)7/30/21, 12:40 PM
The internal structure of jets has been an active research topic in QCD in recent years. In this talk, we propose to use one particular jet substructure - the so-called jet fragmentation function to study spin-dependent distribution and dynamics. In particular, we provide the general theoretical framework for studying the distribution of hadrons inside a jet by taking full advantage of the...
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Yuan-Yuan Zhang (CCNU)7/30/21, 12:55 PM
Large angle gluon radiations induced by multiple parton scatterings contribute to dijet production in deeply inelastic scattering off a large nucleus at the Electron-Ion Collider. Within the generalized high-twist approach to multiple parton scattering, such contributions at the leading order in perturbative QCD and large Bjorken momentum fraction $x_B$ can be expressed as a convolution of the...
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Yuanjing Ji7/30/21, 1:10 PM
In high energy collisions, heavy quarks (c, b) are predominately produced in the initial hard scattering process. The relative ratio of different heavy flavor hadrons species serves as a tool to study charm quark hadronization mechanism. Recently, data from $p$+$p$, $p$+A, and A+A collisions at RHIC and LHC showed that the $\Lambda_c^+/D^0$ ratio is considerably larger than the fragmentation...
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Sean Preins (University of California Riverside)7/30/21, 1:30 PM
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Abdullah Farhat (Old Dominion University)7/30/21, 1:45 PM
We studied the use of machine learning to reconstruct deep inelastic scattering (DIS) kinematics. In particular, we trained deep neural networks to reconstruct $x$ and $Q^2$ based on information from the lepton and the hadronic system in ep scattering at the ZEUS experiment at HERA. These models were trained by a careful selection of Monte Carlo events. The results from the neural networks...
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Eric Moffat (Old Dominion University)7/30/21, 2:00 PM
We present the results of a comprehensive new Monte Carlo analysis of high-energy lepton-lepton, lepton-hadron and hadron-hadron scattering data to simultaneously determine parton distribution functions (PDFs) in the proton and parton to hadron fragmentation functions (FFs).
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Weiyao Ke (University of California, Berkeley; Lawrence-Berkeley National Lab)7/30/21, 2:15 PM
DIS in electron-ion collisions provides detailed information on nuclear parton distribution and the partonic dynamics and hadronization in the cold nuclear matter. A general-purpose event generator that accounts for in-medium parton dynamics in DIS benefits both phenomenological study and experimental design. In the eHIJING-1.0 model currently under development, we use Pythia8 to generate...
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Lawrence Weinstein (Old Dominion University)7/30/21, 2:45 PM
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Jennifer Rittenhouse West (Berkeley Lab and the EIC Center at Jefferson Lab)
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Wenliang Li (William & Mary)
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