Beam-target double-spin asymmetry A{LT} in charged pion production from deep inelastic scattering on a transversely polarized {3}He target at 1.4<Q{2}<2.7  GeV{2}.

Autoria(s): Huang, J; Allada, K; Dutta, C; Katich, J; Qian, X; Wang, Y; Zhang, Y; Aniol, K; Annand, JR; Averett, T; Benmokhtar, F; Bertozzi, W; Bradshaw, PC; Bosted, P; Camsonne, A; Canan, M; Cates, GD; Chen, C; Chen, JP; Chen, W; Chirapatpimol, K; Chudakov, E; Cisbani, E; Cornejo, JC; Cusanno, F; Dalton, MM; Deconinck, W; de Jager, CW; De Leo, R; Deng, X; Deur, A; Ding, H; Dolph, PA; Dutta, D; El Fassi, L; Frullani, S; Gao, H; Garibaldi, F; Gaskell, D; Gilad, S; Gilman, R; Glamazdin, O; Golge, S; Guo, L; Hamilton, D; Hansen, O; Higinbotham, DW; Holmstrom, T; Huang, M; Ibrahim, HF; Iodice, M; Jiang, X; Jin, G; Jones, MK; Kelleher, A; Kim, W; Kolarkar, A; Korsch, W; Lerose, JJ; Li, X; Li, Y; Lindgren, R; Liyanage, N; Long, E; Lu, HJ; Margaziotis, DJ; Markowitz, P; Marrone, S; McNulty, D; Meziani, ZE; Michaels, R; Moffit, B; Muñoz Camacho, C; Nanda, S; Narayan, A; Nelyubin, V; Norum, B; Oh, Y; Osipenko, M; Parno, D; Peng, JC; Phillips, SK; Posik, M; Puckett, AJ; Qiang, Y; Rakhman, A; Ransome, RD; Riordan, S; Saha, A; Sawatzky, B; Schulte, E; Shahinyan, A; Shabestari, MH; Sirca, S; Stepanyan, S; Subedi, R; Sulkosky, V; Tang, LG; Tobias, A; Urciuoli, GM; Vilardi, I; Wang, K; Wojtsekhowski, B; Yan, X; Yao, H; Ye, Y; Ye, Z; Yuan, L; Zhan, X; Zhang, YW; Zhao, B; Zheng, X; Zhu, L; Zhu, X; Zong, X; Jefferson Lab Hall A Collaboration
Data(s)

03/02/2012
Resumo

We report the first measurement of the double-spin asymmetry A{LT} for charged pion electroproduction in semi-inclusive deep-inelastic electron scattering on a transversely polarized {3}He target. The kinematics focused on the valence quark region, 0.16<x<0.35 with 1.4<Q{2}<2.7  GeV{2}. The corresponding neutron A{LT} asymmetries were extracted from the measured {3}He asymmetries and proton over {3}He cross section ratios using the effective polarization approximation. These new data probe the transverse momentum dependent parton distribution function g{1T}{q} and therefore provide access to quark spin-orbit correlations. Our results indicate a positive azimuthal asymmetry for π{-} production on {3}He and the neutron, while our π{+} asymmetries are consistent with zero.

U.S. National Science Foundation U.S. DOE DE-AC05-06OR23177
Identificador

http://www.ncbi.nlm.nih.gov/pubmed/22400926

Phys Rev Lett, 2012, 108 (5), pp. 052001 - ?

http://hdl.handle.net/10161/5720

1079-7114

http://hdl.handle.net/10161/5720
Relação

Phys Rev Lett

10.1103/PhysRevLett.108.052001

Physical Review Letters
Tipo

Journal Article
Cobertura

United States
Formato

052001 - ?
Idioma(s)

ENG
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