Cross sections and single spin asymmetries in hadronic collisions with intrinsic transverse momentum effects
arXiv:hep-ph/0211454 · doi:10.1142/9789812705143_0009
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; the results are compared with available experimental data in several different kinematical situations. We reanalyze transverse single spin asymmetries (SSA) observed in inclusive pion production, p(transv. polarized) p --> pion + X, in terms of Sivers effect and show how it can be disentangled in polarized Drell-Yan processes by suitably integrating over some final configurations. Estimates for RHIC experiments are given.
arXiv commentLaTeX, 8 pages, 4 ps figures, uses epsfig.sty. Talk delivered by F. Murgia at the "IX Convegno su Problemi di Fisica Nucleare Teorica", October 9-12, 2002, Cortona, Italy