An improved analysis of kT effects for SSA in hadronic collisions
U. D'Alesio, F. Murgia
Abstract
The role of intrinsic transverse momentum both in unpolarized and polarized processes is discussed. We consider inclusive cross sections for pion production in hadronic collisions and for Drell-Yan processes. We reanalyze transverse single spin asymmetries (SSA) in inclusive pion production, p(transv. polarized) p --> pion + X, in terms of Sivers effect and show its contribution to AUL in semi-inclusive DIS (SIDIS).
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