arXiv:0809.3743·v1·High Energy Physics — Phenomenology
Sivers and Collins effects in polarized pp scattering processes
M. Anselmino (1)🇮🇹 · M. Boglione (1)🇮🇹 · U. D'Alesio (2,3)🇮🇹 · E. Leader (4)🇬🇧 · S. Melis (1)🇮🇹 · F. Murgia (3) ((1) University and INFN, Torino, Italy, (2) University of Cagliari (Italy), (3) INFN, Cagliari, Italy, (4) Imperial College, London, U.K.)🇮🇹
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(pol) p -> pi,K + X processes at RHIC obtained using updated information from SIDIS data and a new set of meson fragmentation functions.
Comments: 8 pages, 10 eps figures, uses ws-procs9x6.cls; Talk presented by F. Murgia at the II International Workshop on Transverse Polarisation Phenomena in Hard Processes (Transversity 2008), May 28-31, 2008, Ferrara (Italy)