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Cross sections and single spin asymmetries in hadronic collisions with intrinsic transverse momentum effects

U. D'Alesio·F. Murgia
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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.

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U. D'Alesio, F. Murgia. 2002-11-29. Cross sections and single spin asymmetries in hadronic collisions with intrinsic transverse momentum effects. https://doi.org/10.1142/9789812705143_0009

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