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.2
Abstract: FE.00002 : SIDIS Pion Beam Spin Asymmetries with CLAS 12 at 10.6 GeV*
9:15 AM–9:30 AM
Presenter:
Stefan Diehl
(University of Connecticut, Storrs, Connecticut 06269, USA)
Author:
Stefan Diehl
(University of Connecticut, Storrs, Connecticut 06269, USA)
The CLAS12 detector started data taking with a polarized 10.6 GeV electron beam at Jefferson Laboratory (JLab) this February. One of the first quantities which could be extracted from the new data is the moment ALUsin(φ) corresponding to the polarized electron beam spin asymmetry in semi-inclusive deep inelastic scattering. ALUsin(φ) is a twist-3 quantity which provides information about the quark gluon correlations. The study was performed with a 10.6 GeV longitudinally polarized electron beam and an unpolarized liquid hydrogen target. The talk will present a simultaneous study of all three pion channels (π+, π0 and π-) over a large kinematic range with virtualities Q² ranging from 1 GeV² up to 8 GeV². The measurement in a large range of z, xB, pT and Q², including up to now not measured kinematic regions, enables a comparison with different reaction models. The results will be compared to previous studies at an electron beam energy of 5.5 GeV with CLAS6.
*The work is supported by DOE grant no: DE-FG02-04ER41309.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.FE.2
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