Double spin asymmetries of inclusive hadron electroproduction from a transversely polarized He3 target

Y. X. Zhao et al. (Jefferson Lab Hall A Collaboration )
Phys. Rev. C 92, 015207 – Published 14 July 2015

Abstract

We report the measurement of beam-target double spin asymmetries (ALT) in the inclusive production of identified hadrons, e + 3Heh+X, using a longitudinally polarized 5.9-GeV electron beam and a transversely polarized He3 target. Hadrons (π±,K±, and proton) were detected at 16 with an average momentum Ph=2.35 GeV/c and a transverse momentum (pT) coverage from 0.60 to 0.68 GeV/c. Asymmetries from the He3 target were observed to be nonzero for π± production when the target was polarized transversely in the horizontal plane. The π+ and π asymmetries have opposite signs, analogous to the behavior of ALT in semi-inclusive deep-inelastic scattering.

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  • Received 5 February 2015

DOI:https://doi.org/10.1103/PhysRevC.92.015207

©2015 American Physical Society

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Vol. 92, Iss. 1 — July 2015

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