Sivers effect in semi-inclusive deeply inelastic scattering and   Drell-Yan
  The Sivers function is extracted from HERMES data on single spin asymmetries in semi-inclusive deeply inelastic scattering. The result is used for making predictions for the Sivers effect in the Drell-Yan process. 
J.C.Collins, A.V.Efremov, K.Goeke, M.Grosse Perdekamp, S.Menzel,   B.Meredith, A.Metz, P.Schweitzer