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Title: The Sivers effect and the Single Spin Asymmetry A_N in p(transv. pol.) p --> h X processes

The single spin asymmetry A_N, for large P_T single inclusive particle production in p(transv. pol.) p collisions, is considered within a generalised parton model and a transverse momentum dependent factorisation scheme. The focus is on the Sivers effect and the study of its potential contribution to A_N, 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 A_N data, including some recent STAR results which show the persistence of a non zero A_N up to surprisingly large P_T values.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [2] ;  [3]
  1. TORINO, INFN-TORINO
  2. INFN Cagliari
  3. JLAB
Publication Date:
OSTI Identifier:
1093859
Report Number(s):
JLAB-THY-13-1744; DOE/OR/23177-2780; arXiv:1304.7691
DOE Contract Number:
AC05-06OR23177
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. D; Journal Volume: 88; Journal Issue: 05
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS