Single spin asymmetries, unpolarized cross sections and the role of partonic transverse momentum

Details Single spin asymmetries, unpolarized cross sections and the role of partonic transverse momentum Single spin asymmetries, unpolarized cross sections and the role of partonic transverse momentum

2002-11-13

arxiv.org/abs/hep-ph/0211201v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 6 pages, 4 ps figures, uses graphicx.sty. Talk delivered by U. D'Alesio at the ``15th International Spin Physics Sympos

Scientific paper

10.1063/1.1607180

Partonic intrinsic transverse momentum can be essential for the explanation of large single spin asymmetries in hadronic reactions in the framework of perturbative QCD. The status of an ongoing program investigating in a consistent way the role of intrinsic transverse momentum both in unpolarized and polarized processes is discussed. We compute inclusive cross sections for hadron and photon production in hadronic collisions and for Drell-Yan processes; the results are compared with available experimental data in several different kinematical situations.

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