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.
@article{arxiv.0809.3743,
title = {Sivers and Collins effects in polarized pp scattering processes},
author = {M. Anselmino and M. Boglione and U. D'Alesio and E. Leader and S. Melis and F. Murgia},
journal= {arXiv preprint arXiv:0809.3743},
year = {2017}
}
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)