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

被引：54
|
作者：
Anselmino, M. [1 ,2 ]
Boglione, M. [1 ,2 ]
D'Alesio, U. [3 ,4 ]
Melis, S. [1 ,2 ]
Murgia, F. [4 ]
Prokudin, A. [5 ]
机构：
[1] Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy
[2] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
[3] Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, CA, Italy
[4] Ist Nazl Fis Nucl, Sez Cagliari, I-09042 Monserrato, CA, Italy
[5] Jefferson Lab, Newport News, VA 23606 USA
来源：
PHYSICAL REVIEW D | 2013年 / 88卷 / 05期
关键词：
CHIRAL-ODD CONTRIBUTION; HARD-SCATTERING; DRELL-YAN; POLARIZED ANTIPROTONS; STATE INTERACTIONS; ANALYZING POWER; CROSS-SECTIONS; DISTRIBUTIONS; DEPENDENCE; AZIMUTHAL;
D O I：
10.1103/PhysRevD.88.054023
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The single spin asymmetry A(N), for large P-T single inclusive particle production in p(up arrow)p 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 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 nonzero A(N) up to surprisingly large P-T values.
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收藏
页数：12
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