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Exclusive η electroproduction at W>2 GeV with CLAS and transversity generalized parton distributions
Bedlinskiy, I Kubarovsky, V Stoler, P Adhikari, KP Akbar, Z Anefalos Pereira, S Avakian, H Ball, J Baltzell, NA Battaglieri, M
Bedlinskiy, I
Kubarovsky, V
Stoler, P
Adhikari, KP
Akbar, Z
Anefalos Pereira, S
Avakian, H
Ball, J
Baltzell, NA
Battaglieri, M
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Pre-print
Date
2017-03-10
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10.1103/PhysRevC.95.035202
Abstract
© 2017 American Physical Society. The cross section of the exclusive η electroproduction reaction ep→e′p′η was measured at Jefferson Laboratory with a 5.75 GeV electron beam and the CLAS detector. Differential cross sections d4σ/dtdQ2dxBdφη and structure functions σU=σT+ϵσL,σTT, and σLT, as functions of t, were obtained over a wide range of Q2 and xB. The η structure functions are compared with those previously measured for π0 at the same kinematics. At low t, both π0 and η are described reasonably well by generalized parton distributions (GPDs) in which chiral-odd transversity GPDs are dominant. The π0 and η data, when taken together, can facilitate the flavor decomposition of the transversity GPDs.
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Physical Review C
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