Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-12-22
Phys.Lett. B612 (2005) 233-244
Physics
High Energy Physics
High Energy Physics - Phenomenology
Discussion of recent COMPASS data included, minor corrections, figures and references added, close to published version
Scientific paper
10.1016/j.physletb.2005.03.010
The Sivers parton distribution has been predicted to obey a particular ``universality relation'', namely to have opposite sign in semi-inclusive deeply inelastic scattering (SIDIS) and the Drell-Yan process. We discuss how, on the basis of present HERMES data, this remarkable prediction of the QCD factorization approach to the description of single spin asymmetries related to the Sivers effect could be checked experimentally in future experiments at PAX and COMPASS.
Efremov A. V.
Goeke Klaus
Menzel Simone
Metz Andreas
Schweitzer Pascal
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