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Bob McKeown (Jefferson Lab)6/7/21, 8:45 AMSlides
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Dipangkar Dutta (Mississippi State U.)6/7/21, 9:00 AMSlides
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Shunzo Kumano (KEK)6/7/21, 9:10 AMSlides
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Lamiaa El-Fassi (Mississippi State University)6/7/21, 9:40 AMSlides
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Gerald Miller (U. of Washington)6/7/21, 10:20 AMSlides
’ll begin by briefly reviewing existing experiments and related theory. The bulk of the talk will be on a new approach, discussed in https://arxiv.org/abs/2104.11168, to the time dependence of putative point-like configurations moving within the nucleus. Those considerations indicate that the Feynman mechanism is responsible for the proton elastic form factor, and that the future of color...
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Holly Szumilla-Vance (JLab)6/7/21, 10:50 AMSlides
Observation of color transparency in baryons would provide a new means to study the nuclear strong force and would be the first clear observation of hadrons fluctuating to a small size in the nucleus. This talk will present the recently published Hall C results ruling out observation of the onset of color transparency in baryons up to Q2=14.3 GeV^2. Additionally, an overview of an upcoming...
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Stanley Brodsky (SLAC)6/7/21, 11:20 AMSlides
The color transparency of a hadron, propagating without absorption in a nucleus, is a fundamental property of QCD, reflecting the hadron's internal structure and the effective size of its color distribution when it is produced at high transverse momentum $Q$. By using the framework of holographic light-front QCD, one can predict the $Q^2$ behavior of the effective transverse size of the...
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Ulrich Mosel (U. of Giessen)6/7/21, 1:30 PMSlides
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Or Hen (MIT)6/7/21, 2:00 PMSlides
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Natalie Wright (MIT)6/7/21, 2:30 PMSlides
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Guy de Teramond6/7/21, 3:10 PMSlides
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Eli Piasetzky6/7/21, 3:25 PMSlides
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Anatoly Radyushkin (Old Dominion University)6/7/21, 4:00 PMSlides
I give an overview of (mostly my own) work on aspects of QCD dynamics in hadronic form factors at large momentum transfer.
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The topics include a discussion of basics of soft and hard mechanisms, QCD sum rule applications, calculation of meson form factors in holographic QCD, and connection of form factors to generalized parton distributions. -
Miguel Arratia (UC Riverside)6/7/21, 4:30 PMSlides
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Bill Li (William and Mary), Garth Huber (U. of Regina)6/7/21, 5:00 PMSlides
The recent measurements of exclusive backward-angle meson electroproduction
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from Jefferson Lab hint at a new domain of applicability of the QCD collinear
factorization framework in the special u-channel kinematics regime. As a
signature of QCD degrees of freedom in nuclei, and as a co-requisite of
reaching the factorization regime, Color Transparency is expected to manifest
itself as an... -
Mark Strikman (Penn State)6/7/21, 5:30 PM
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Dipangkar Dutta (Mississippi State University)6/8/21, 9:00 AMSlides
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Wen-chen Chang (Academia Sinica)6/8/21, 9:10 AMSlides
We propose to measure the pion-induced exclusive Drell-Yan process using the E50 high-resolution spectrometer in the high-momentum beamline of Hadron Hall at J-PARC. The cross sections of this reaction will provide information about the proton generalized parton distributions (GPDs) and the pion distribution amplitudes (DAs) through a timelike approach. The strategies and road maps will be sketched.
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Leonid Frankfurt (Tel Aviv U.)6/8/21, 9:40 AMSlides
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Christian Weiss (JLab)6/8/21, 10:20 AMSlides
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Vadim Guzey (Petersburg Nuclear Physics Institute )6/8/21, 10:50 AMSlides
Generalized color transparency (CT) is related to QCD factorization theorems
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allowing one to express cross sections of hard processes with nuclei
in terms of nuclear parton distributions. In my talk, I will review
recent studies of generalized CT in coherent photoproduction of
J/psi mesons in ultraperipheral collisions (UPCs) of heavy ions at the LHC
focusing on the leading twist nuclear... -
Wim Cosyn (Florida International U.)6/8/21, 11:20 AMSlides
I give an overview of work done in the relativistic multiple scattering
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Glauber approximation (RMSGA) model. I focus on reactions relevant to
color transparency studies at intermediate energies, such as proton,
pion and rho knockout reactions and discuss the agreement with the world
data. -
John Ralston (U. of Kansas)6/8/21, 1:30 PMSlides
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Alexie Larionov (JINR Dubna)6/8/21, 2:00 PMSlides
Antiproton annihilation on the bound nucleon allows to study exclusive channels
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of mesonic interactions with the target residue. If the hard scale is present
then such interactions should be reduced due to the color transparency (CT).
I will discuss, first, the "golden" channel A(pbar,J/psi)(A-1)^*
for the study of the J/psi dissociation cross section on the nucleon.
Then, the d(pbar,pi^-... -
Ivan Vitev (Los Alamos National Lab)6/8/21, 2:30 PMSlides
Abstract: I will discuss selected topics on jet and heavy flavor production in e+p and e+A
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collisions at the future Electron-Ion Collider. In the simpler e+p system I will show how precision
theory of novel energy-energy correlator observables can provide a complementary handle
on the physics of transverse momentum distributions. In e+A reactions I demonstrate the
utility of jet and... -
Lamiaa El-Fassi (Mississippi State U.)6/8/21, 3:10 PMSlides
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Misak Sargsian (FIU)6/8/21, 3:35 PMSlides
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Werner Boeglin (FIU)6/8/21, 4:00 PMSlides
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Israel Mardor (Tel Aviv U.)6/8/21, 4:30 PMSlides
We present the results of two experimental programs at the Alternating Gradient Synchrotron of Brookhaven National Lab, to measure the nuclear transparency of nuclei via the quasi-elastic A(p,2p) scattering process near 90° in the pp center of mass. Data was taken at effective incident momenta ranging from 5.0 to 15.8 GeV/c (taking into account the Fermi motion of the target proton in the...
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Douglas Higinbotham (JLab)6/8/21, 5:00 PMSlides
By design, the (e,e’p) color transparency experiments have been done in relatively clean kinematics (parallel) where FSI effects are minimal. Also, the dominator of the transparency is a naïve function such that and one would not expect the ratio to go to unity even if there was color transparency due to initial-state effects, such as short-range correlations, which are neglected. We look...
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Mark Strikman (Penn State)6/8/21, 5:30 PMSlides
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