Single spin asymmetry in inclusive hadron production in pp scattering from Collins mechanism

被引：13
|
作者：
Yuan, Feng [1 ,2 ]
机构：
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA
[2] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA
来源：
PHYSICS LETTERS B | 2008年 / 666卷 / 01期
关键词：
D O I：
10.1016/j.physletb.2008.06.066
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the Collins mechanism contribution to the single transverse spin asymmetry in inclusive hadron production in pp scattering p up arrow p -> pi X from the leading jet fragmentation. The azimuthal asymmetric distribution of hadron in the jet leads to a single spin asymmetry for the produced hadron in the Lab frame. The effect is evaluated in a transverse momentum dependent model that takes into account the transverse momentum dependence in the fragmentation process. We find the asymmetry is comparable in size to the experimental observation at RHIC at root s = 200 GeV. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：44 / 47
页数：4
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