Sivers effect in semi-inclusive deeply inelastic scattering
Collins, J. C. · Efremov, A. V. · Goeke, K. · Menzel, S. · Metz, A. · Schweitzer, P.
Original · EN
The Sivers function is extracted from HERMES data on single spin asymmetries in semi-inclusive deeply inelastic scattering. Our analysis use a simple Gaussian model for the distribution of transverse parton momenta, together with the flavor dependence given by the leading 1/Nc approximation and a neglect of the Sivers antiquark distribution. We find that within the errors of the data these approximations are sufficient.
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