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}

Huang, J. et al. (2012) 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), 052001. (doi:10.1103/PhysRevLett.108.052001)

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Abstract

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 ALTasymmetries were extracted from the measured 3 Heasymmetries and proton over 3 He cross section ratios using the effective polarization approximation. These new data probe the transverse momentum dependent parton distribution function gq1T 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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Annand, Dr John and Hamilton, Dr David
Authors: Huang, J., Allada, K., Dutta, C., Katich, J., Qian, X., Wang, Y., Zhang, Y., Aniol, K., Annand, J.R.M., 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.J., 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., and Zong, X.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN:0031-9007
ISSN (Online):1079-7114

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