Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS

Details Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS

2008-02-15

arxiv.org/abs/0802.2160v2

Phys.Lett.B673:127-135,2009

Physics

High Energy Physics

High Energy Physics - Experiment

16 pages, 9 figures, added author Efremov, calculated pure kaon asymmetries instead of those for experimental kaon/pion mixtur

Scientific paper

10.1016/j.physletb.2009.01.060

The measurements of the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons on a transversely polarised 6LiD target at COMPASS are presented. The results for charged pions and charged and neutral kaons correspond to all data available, which were collected from 2002 to 2004. For all final state particles both the Collins and Sivers asymmetries turn out to be small, compatible with zero within the statistical errors, in line with the previously published results for not identified charged hadrons, and with the expected cancellation between the u- and d-quark contributions.

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