Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session FE: Mini-symposium: Photoproduction and Electroproduction of Hadrons II
9:00 AM–11:30 AM,
Friday, October 26, 2018
Hilton
Room: King's 1
Chair: Kyungseon Joo, University of Connecticut
Abstract ID: BAPS.2018.HAW.FE.10
Abstract: FE.00010 : Imaging quark transverse spin distributions via exclusive pseudoscalar meson electroproducton with CLAS at Jefferson Lab.*
11:15 AM–11:30 AM
Presenter:
Paul Stoler
(Univ. of Connecticut and Rensselaer Polytech Inst)
Authors:
Paul Stoler
(Univ. of Connecticut and Rensselaer Polytech Inst)
Valery Kubarovsky
(Jefferson Laboratory)
One of the major experimental research programs of the Jefferson Lab CLAS Collaboration is deeply virtual pseudoscalar meson electroproduction. These reactions are uniquely sensitive to the transversity generalized parton distributions (GPD) ET, and HT, which are related to quark transverse spin densities in the nucleon. By observing different mesons one can obtain distributions for each quark flavor. Experimental results on exclusive π0 and η electroproduction at electron energy near 6 GeV, obtained by the CLAS collaboration, will be presented, and discussed in terms of their separation into generalized form factors (GFF) and GPDs of u and d quark flavors. These in turn can be related to the density of polarized u and d quarks in an unpolarized nucleon. The resulting analysis relating to transversity spin densities of the nucleon’s u and d quark flavors will be presented. Further plans for measurements at higher beam energies at CLAS, and the planned analysis in terms of GFFs, and GPDs will be discussed.
*This material is based upon work supported by the U.S Department of Energy, Office of Nuclear Physics under contracts DE-AC05-06)R23177 and DE-FG02-04ER41309
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.FE.10
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