Observation of the Naive-T-Odd Sivers Effect in Deep-Inelastic Scattering
- Airapetian, A.
- Blok, H.P.
- van der Nat, P.B.
- Wang, S.
Publication date
January 2009
DOI Publisher
American Physical Society (APS)Abstract
Azimuthal single-spin asymmetries of leptoproduced pions and charged kaons were measured on a transversely polarized hydrogen target. Evidence for a naive-T-odd, transverse-momentum-dependent parton distribution function is deduced from nonvanishing Sivers effects for π+, π0, and K±, as well as in the difference of the π+ and π- cross sections. © 2009 The American Physical Society
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