Sivers effect and the single spin asymmetry AN in p p→hX processes

M. Anselmino, M. Boglione, U. D'Alesio, S. Melis, F. Murgia, A. Prokudin

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The single spin asymmetry AN, for large PT single inclusive particle production in pp collisions, is considered within a generalized parton model and a transverse momentum dependent factorization scheme. The focus is on the Sivers effect and the study of its potential contribution to AN, based on a careful analysis of the Sivers functions extracted from azimuthal asymmetries in semi-inclusive deep inelastic scattering processes. It is found that such Sivers functions could explain most features of the AN data, including some recent STAR results which show the persistence of a nonzero AN up to surprisingly large PT values.

Original languageEnglish (US)
Article number054023
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number5
StatePublished - Sep 23 2013

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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