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Single spin asymmetries in charged kaon production from semi-inclusive deep inelastic scattering on a transversely polarized He^3 target

Zhao, Y. X. and Qian, X. (2014) Single spin asymmetries in charged kaon production from semi-inclusive deep inelastic scattering on a transversely polarized He^3 target. Physical Review C, 90 (5). Art. No. 055201. ISSN 0556-2813. http://resolver.caltech.edu/CaltechAUTHORS:20141222-095047363

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Abstract

We report the first measurement of target single spin asymmetries of charged kaons produced in semi-inclusive deep inelastic scattering of electrons off a transversely polarized He^3 target. Both the Collins and Sivers moments, which are related to the nucleon transversity and Sivers distributions, respectively, are extracted over the kinematic range of 0.1<x_(bj) <0.4 for K+ and K− production. While the Collins and Sivers moments for K+ are consistent with zero within the experimental uncertainties, both moments for K− favor negative values. The Sivers moments are compared to the theoretical prediction from a phenomenological fit to the world data. While the K+ Sivers moments are consistent with the prediction, the K− results differ from the prediction at the 2-sigma level.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevC.90.055201 DOIArticle
http://journals.aps.org/prc/abstract/10.1103/PhysRevC.90.055201PublisherArticle
http://arxiv.org/abs/1404.7204arXivDiscussion Paper
Alternate Title:Single spin asymmetries in charged kaon production from semi-inclusive deep inelastic scattering on a transversely polarized He3 target
Additional Information:© 2014 American Physical Society. Received 28 April 2014; published 3 November 2014. We acknowledge the outstanding support of the J Lab Hall A technical staff and the Accelerator Division in accomplishing this experiment. We also thank Alexei Prokudin for helpful discussions. This work was supported in part by the U.S. National Science Foundation, and by DOE Contract No. DE-AC05-06OR23177, under which the Jefferson Science Associates (JSA) operates the Thomas Jefferson National Accelerator Facility. This work was also supported by the National Natural Science Foundation of China under Grants No. 11135002 and No. 11120101004.
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
Department of Energy (DOE)DE-AC05-06OR23177
National Natural Science Foundation of China11135002
National Natural Science Foundation of China11120101004
Classification Code:PACS: 24.70.+s, 14.20.Dh, 24.85.+p, 25.30.Rw
Record Number:CaltechAUTHORS:20141222-095047363
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141222-095047363
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53078
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:22 Dec 2014 18:23
Last Modified:22 Dec 2014 18:23

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