Single spin asymmetries in charged kaon production from semi-inclusive deep inelastic scattering on a transversely polarized [superscript 3]He target
Name
PhysRevC.90.055201.pdf
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378.8 KB
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Checksum (MD5)
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Author(s)
Zhao, Y. X.
Wang, Y.
Aniol, K.
Annand, J. R. M.
Averett, T.
Benmokhtar, F.
Bradshaw, P. C.
Bosted, P.
Camsonne, A.
Canan, M.
Date Issued
November 2014
Journal
Physical Review C
Publisher
American Physical Society
Citation
Zhao, Y. X., et al. "Single spin asymmetries in charged kaon production from semi-inclusive deep inelastic scattering on a transversely polarized [superscript 3]He target" Phys. Rev. C 90, 055201 (November 2014). © 2014 American Physical Society
Version
Final published version
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 [superscript 3]He 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[subscript bj] < 0.4 for K[superscript +] and K[superscript −] production. While the Collins and Sivers moments for K[superscript +] are consistent with zero within the experimental uncertainties, both moments for K[superscript −] favor negative values. The Sivers moments are compared to the theoretical prediction from a phenomenological fit to the world data. While the K[superscript +] Sivers moments are consistent with the prediction, the K[superscript −] results differ from the prediction at the 2-sigma level.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevC.90.055201
