Beam-Target Double-Spin Asymmetry ALT in Charged Pion Production from Deep Inelastic Scattering on a Transversely Polarized 3He Target at 1.4<Q2<2.7  GeV2

Huang, J.; Allada, K.; Dutta, C.; Katich, J.; Qian, X.; Wang, Y.; Zhang, Y.; Aniol, K.; Annand, J.; Averett, T.; Benmokhtar, F.; Bertozzi, W.; Bradshaw, P.; Bosted, P.; Camsonne, A.; Canan, M.; Cates, G.; Chen, C.; Chen, J.-P.; Chen, W.; Chirapatpimol, K.; Chudakov, E.; Cisbani, E.; Cornejo, J.; Cusanno, F.; Dalton, M.; Deconinck, W.; de Jager, C.; De Leo, R.; Deng, X.; Deur, A.; Ding, H.; Dolph, P.; 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, D.; Holmstrom, T.; Huang, M.; Ibrahim, H.; Iodice, M.; Jiang, X.; Jin, G.; Jones, M.; Kelleher, A.; Kim, W.; Kolarkar, A.; Korsch, W.; LeRose, J.; Li, X.; Li, Y.; Lindgren, R.; Liyanage, N.; Long, E.; Lu, H.-J.; Margaziotis, D.; Markowitz, P.; Marrone, S.; McNulty, D.; Meziani, Z.-E.; Michaels, R.; Moffit, B.; Muñoz Camacho, C.; Nanda, S.; Narayan, A.; Nelyubin, V.; Norum, B.; Oh, Y.; Osipenko, M.; Parno, D.; Peng, J.; Phillips, S.; Posik, M.; Puckett, A.; Qiang, Y.; Rakhman, A.; Ransome, R.; Riordan, S.; Saha, A.; Sawatzky, B.; Schulte, E.; Shahinyan, A.; Shabestari, M.; Širca, S.; Stepanyan, S.; Subedi, R.; Sulkosky, V.; Tang, L.-G.; Tobias, A.; Urciuoli, G.; Vilardi, I.; Wang, K.; Wojtsekhowski, B.; Yan, X.; Yao, H.; Ye, Y.; Ye, Z.; Yuan, L.; Zhan, X.; Zhang, Y.-W.; Zhao, B.; Zheng, X.; Zhu, L.; Zhu, X.; Zong, X.

Author(s)

Huang, Jin; Bertozzi, William; Deconinck, Anne E.; Gilad, Shalev; Moffit, Bryan J.; ... Show more

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Abstract

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

Date issued

2012-01

URI

http://hdl.handle.net/1721.1/70876

Department

Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Koch Institute for Integrative Cancer Research at MIT

Journal

Physical Review Letters

Publisher

American Physical Society

Citation

Huang, J. et al. “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}.” Physical Review Letters 108.5 (2012): Web. 17 May 2012. © 2012 American Physical Society

Version: Final published version

ISSN

0031-9007

1079-7114

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