Document Type
Article
Department/Program
Physics
Pub Date
2014
First Page
5
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.
Recommended Citation
Zhao, Y. X.; Lu, H. -J.; Yan, X.; Averett, Todd; Bradshaw, P. C.; Katich, J.; Kelleher, A.; and Zhao, B., Single spin asymmetries in charged kaon production from semi-inclusive deep inelastic scattering on a transversely polarized He-3 target (2014).
10.1103/PhysRevC.90.055201
DOI
10.1103/PhysRevC.90.055201
