Physical Review C
We report the measurement of beam-target double spin asymmetries (ALT) in the inclusive production of identified hadrons, →e + 3He↑ → h + 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 He-3 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.
Original Publication Citation
Zhao, Y. X., Allada, K., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., . . . Jefferson Lab Hall, A. C. (2015). Double spin asymmetries of inclusive hadron electroproduction from a transversely polarized He-3 target. Physical Review C, 92(1), 15207. doi:10.1103/PhysRevC.92.015207
Zhao, Y. X.; Allada, K.; Aniol, K.; Annand, J.R.M.; Averett, T.; Benmokhtar, F.; and Canan, M., "Double Spin Asymmetries of Inclusive Hadron Electroproduction From a Transversely Polarized He-3 Target" (2015). Physics Faculty Publications. 137.