We report the measurement of beam-target double spin asymmetries (ALT) in the inclusive production of identified hadrons, e⃗ + 3Heh+X, using a longitudinally polarized 5.9-GeV electron beam and a transversely polarized 3He 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 3He 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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Published in Physical Review C: Nuclear Physics, v. 92, no. 1, article 015207, p. 1-6.

©2015 American Physical Society

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This work is a creation of the Jefferson Lab Hall A Collaboration. Due to the large number of authors involved, only the first 10 and the ones affiliated with the University of Kentucky are listed in the author section above. For the complete list of authors, please download this article or visit the following link: http://dx.doi.org/10.1103/PhysRevC.92.015207

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This work was supported in part by the US National Science Foundation and by Department of Energy (DOE) Contract No. DE-AC05-06OR23177, under which the Jefferson Science Associates operates the Thomas Jefferson National Accelerator Facility. This work was also supported by the National Natural Science Foundation of China under Grants No. 11135002 and No. 11120101004 and the UK Science and Technology Facilities Council under Grants No. 57071/1 and No. 50727/1.

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