Polarized and unpolarized Drell-Yan processes are crucial to investigate transverse momentum dependent distribution functions. Some of them are directly accessible even when integrating on the leptonic degree of freedom, others require the study of the angular decay distribution of the virtual photon. Exploiting our recent fit of SIDIS data on the Sivers functions we present predictions for Sivers effect at COMPASS-DY.
Sivers, Boer-Mulders and Transversity in Drell-Yan Processes
D'ALESIO, UMBERTO;MELIS, STEFANO;
2008-01-01
Abstract
Polarized and unpolarized Drell-Yan processes are crucial to investigate transverse momentum dependent distribution functions. Some of them are directly accessible even when integrating on the leptonic degree of freedom, others require the study of the angular decay distribution of the virtual photon. Exploiting our recent fit of SIDIS data on the Sivers functions we present predictions for Sivers effect at COMPASS-DY.
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