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Beam-Target Double Spin Asymmetry A<sub>LT</sub> in Charged Pion Production from Deep Inelastic Scattering on a Transversely Polarized <sup>3</sup>He Target at 1.4<Q<sup>2</sup><2.7 GeV<sup>2</sup> [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Science, 2012.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
052,001 (6 pages) : digital, PDF file
Additional Creators
Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We report the first measurement of the double-spin asymmetry ALT for charged pion electroproduction in semi-inclusive deep inelastic electron scattering on a transversely polarized 3He target. The kinematics focused on the valence quark region, 0.16 < x < 0.35 with 1.4 < Q2 < 2.7 GeV2. The corresponding neutron ALT asymmetries were extracted from the measured 3He asymmetries and proton/3He cross section ratios using the effective polarization approximation. These new data probe the transverse momentum dependent parton distribution function gq and therefore provide access to quark spin-orbit correlations. Our results indicate a positive azimuthal asymmetry for π- production on 3He and the neutron, while our π+ asymmetries are consistent with zero.
Report Numbers
E 1.99:jlab-phy-11-1359
E 1.99: doe/or/23177-1734
E 1.99: arxiv:1108.0489
arxiv:1108.0489
doe/or/23177-1734
jlab-phy-11-1359
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Note
Published through SciTech Connect.
01/30/2012.
"jlab-phy-11-1359"
" doe/or/23177-1734"
" arxiv:1108.0489"
Physical Review Letters 108 5 ISSN 0031-9007; PRLTAO AM
Schulte, E; Zhao, B; Wang, K; Zhu, L; Yan, X; Zhu, X; Zheng, X; Michaels, R; Ye, Y; Ye, Z; Oh, Y; Norum, B; Yao, H; Narayan, A; Osipenko, M; Saha, A; Yuan, L; Wojtsekhowski, B; Nelyubin, V; Nanda, S; Sirca, S; Tobias, A; Riordan, S; Zhan, X; Stepanyan, S; Qiang, Y; Sulkosky, V; Shahinyan, A; Subedi, R; Sawatzky, B; Vilardi, I; Munoz Camacho, C; Meziani, Z -E; Parno, D; Phillips, S K; Posik, M; Rakhman, A; Urciuoli, G M; Ransome, R D; Zhang, Y -W; Peng, J C; Puckett, A.J. R; Shabestari, M H; Tang, L -G.
Funding Information
AC05-06OR23177
View MARC record | catkey: 14706484