Parton intrinsic motion: unpolarized cross sections and the Sivers effect in inclusive particle production

Details Parton intrinsic motion: unpolarized cross sections and the Sivers effect in inclusive particle production Parton intrinsic motion: unpolarized cross sections and the Sivers effect in inclusive particle production

2004-12-21

arxiv.org/abs/hep-ph/0412317v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX2e, 4 pages, 4 ps figures, uses ws-procs9x6. Talk delivered by F. Murgia at the ``16th International Spin Physics Symposi

Scientific paper

We present a detailed study, performed in the framework of LO perturbative QCD with the inclusion of spin and k_T effects, of unpolarized cross sections for the Drell-Yan process and for inclusive pion and photon production in hadronic collisions, in different kinematical situations. We find a satisfactory agreement between theoretical predictions and experimental data. This supports the study of spin effects and transverse single spin asymmetries (SSA) within the same scheme. We then present results for SSA, generated by the so-called Sivers effect, in inclusive pion production in proton-proton collisions.

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