We summarize the present phenomenology of Sivers and Collins effects for transverse single spin asymmetries in polarized proton-proton collisions within the framework of the generalized parton model (GPM). We will discuss a reassessment of the Collins effect and some preliminary predictions for SSA's in p(uparrow) p -> pi, K + X processes at RHIC obtained using updated information from SIDIS data and a new set of meson fragmentation functions.
Sivers and Collins effects in polarized pp scattering processes
D'ALESIO, UMBERTO;
2009-01-01
Abstract
We summarize the present phenomenology of Sivers and Collins effects for transverse single spin asymmetries in polarized proton-proton collisions within the framework of the generalized parton model (GPM). We will discuss a reassessment of the Collins effect and some preliminary predictions for SSA's in p(uparrow) p -> pi, K + X processes at RHIC obtained using updated information from SIDIS data and a new set of meson fragmentation functions.
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