Bulletin of the American Physical Society
86th Annual Meeting of the APS Southeastern Section
Volume 64, Number 19
Thursday–Saturday, November 7–9, 2019; Wrightsville Beach, North Carolina
Session K01: The 3D Structure of the Hadrons |
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Chair: Harut Avakian, Jefferson Laboratory Room: Holiday Inn Resort Causeway/Masonboro |
Saturday, November 9, 2019 2:00PM - 2:30PM |
K01.00001: Augmented reality: a 3D-look inside matter to understand how it comes about from QCD quarks and gluons Invited Speaker: Marco Radici \begin{document} We know that quarks and gluons combine to form ordinary matter following QCD, the theory of Strong Interactions. However, at the energies of everyday life the theory is so intricate that we don't know yet how this happens. In order to understand it, we want to build 3D pictures of matter interiors. The tools that allow for a 3D mapping in momentum space, are named Transverse-Momentum parton Densities, or TMDs. In this talk, I will review the current status of our knowledge on TMDs of the nucleon, including the case when quark and/or nucleon are polarized. \end{document} [Preview Abstract] |
Saturday, November 9, 2019 2:30PM - 3:00PM |
K01.00002: 3-D Nucleon Structure Studies at JLab Hall A and C. Invited Speaker: Jian-ping Chen Nucleon structure study was initially focused on one-dimensional parton distribution functions (PDFs). Recently it has progressed rapidly into to three-dimensional study: both the transverse-momentum dependent distributions (TMDs) and the generalized parton distributions (GPDs). This talk will give some highlights from the recent TMD and GPD experiments at JLab's Hall A and Hall C and will discuss the planned precision measurements in near future. [Preview Abstract] |
Saturday, November 9, 2019 3:00PM - 3:30PM |
K01.00003: SIDIS with CLAS12 Invited Speaker: Giovanni Angelini A large part of the CLAS12 experimental program is dedicated to the study of mesons electroproduction via semi-inclusive deep inelastic scattering. This process is of high interest for obtaining a multi-dimensional description of the nucleon structure trough transverse momentum partonic fragmentation and distribution functions. The achieved high luminosity, together with the detector's large acceptance, allow obtaining a truly multidimensional description of the nucleon structure in a large kinematic domain with unprecedented statistical precision. In this talk, the current performance of the detector together with preliminary results will be presented. [Preview Abstract] |
Saturday, November 9, 2019 3:30PM - 4:00PM |
K01.00004: The study of chiral-odd GPDs using deeply virtual $\pi^0$ electroproduction with CLAS12 at Jefferson Lab. Invited Speaker: Andrey Kim The interpretation of deeply virtual electroproduction of photons and mesons in term of Generalized Parton Distributions (GPDs) allows us to access the information about correlations between quark longitudinal momentum and transverse spatial distributions. In particular, the measurements of pseudoscalar meson electroproduction constrain largely unknown chiral-odd GPDs $\bar E_T$ and $H_T$ which contain information on quark transverse spin densities in unpolarized and polarized nucleons. The CLAS detector at Jefferson Lab has provided the data on $\pi^0$ and $\eta$ electroproduction over wide kinematic range for $Q^2$ up to 5 GeV$^2$. These data demonstrated the unique sensitivity of pseudoscalar meson electroproduction to the chiral-odd GPDs. The efforts continue with new experimental measurements of $\pi^0$ electroproduction using recently upgraded CLAS12 detector and 10.6 GeV polarized electron beam with the kinematic range extending up to $Q^2$=8 GeV$^2$. In this talk, we will present the current status of $\pi^0$ electroproduction analysis and review the plans for extraction of underlying GPDs at Jefferson Lab. [Preview Abstract] |
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