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.

引用

页数：12

共 86 条

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