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Title: On the potential role of the Collins effect in A_N in pp --> pion X

Transverse single spin asymmetries in pp --> pion X processes, while on a quite firm ground experimentally, are still a much debated phenomenological issue. We consider them in a transverse momentum dependent factorization scheme. After revisiting a previous result, we give new estimates of the Collins contribution by adopting the latest information on the Collins and transversity functions, as extracted from SIDIS and e+e- data.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6]
  1. TORINO, INFN-TORINO
  2. CAGLIARI, INFN Cagliari
  3. Imperial College London
  4. ECT Trento
  5. INFN Cagliari
  6. JLAB
Publication Date:
OSTI Identifier:
1121875
Report Number(s):
JLAB-THY-13-1776; DOE/OR/23177-2970; arXiv:1303.3227
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Journal Name: Nuovo Cim.; Journal Volume: 36; Journal Issue: 5; Conference: QCD-N'12, 22-26 Oct 2012, Bilbao, Spain
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