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

The COMPASS collaboration
Phys.Lett.B 673 (2009) 127-135, 2009.

Abstract (data abstract)
CERN-SPS. Measurement of the Collins and Sivers asymmetries in identified hadrons produced in DIS of 160 GeV longitudinally polarized positive muons on a transversely polarized Li6-D target. The charged pion and kaon data were taken in 2003 to 2004 and the neutral kaon from 2002 to 2004. Data are presented all & apos;ALL& apos; where Z & gt; 0.2 and & apos;LEADING& apos; where Z of the most energetic hadrons is & gt; 0.25. DIS is selected with photon virtuality Q**2 & gt; 1 GeV**2 and mass of the hadronic final state W & gt; 5 GeV. Previous similar COMPASS data for non-identical hadrons is given in Ageev et al, NP B765,31.. Numerical values supplied by G. Mallot.

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