arXiv:hep-ph/0211198·v1·High Energy Physics — Phenomenology
Sivers effect and transverse single spin asymmetries in Drell-Yan processes
M. Anselmino (1)🇮🇹 · U. D'Alesio (2)🇮🇹 · F. Murgia (2) ((1) University and INFN, Torino, Italy, (2) University and INFN, Cagliari, Italy)🇮🇹
Abstract
Sivers asymmetry, adopted to explain transverse single spin asymmetries (SSA) observed in inclusive pion production, p(transv. polarized) p --> pion + X and p-bar(transv. polarized) p --> pion + X is used here to compute SSA in Drell-Yan processes; in this case, by considering the differential cross section in the lepton-pair invariant mass, rapidity and transverse momentum, other mechanisms which may originate SSA cannot contribute. Estimates for RHIC experiments are given.
Comments: LaTeX, 6 pages, 2 ps figures, uses graphicx.sty. Talk delivered by U. D'Alesio at the ``15th International Spin Physics Symposium'', SPIN2002, September 9-14, 2002, Brookhaven National Laboratory, Upton (NY), USA