New analysis of the single transverse-spin asymmetry for hadron production at RHIC

被引：56
|
作者：
Kanazawa, Koichi [1 ]
Koike, Yuji [2 ]
机构：
[1] Niigata Univ, Grad Sch Sci & Technol, Niigata 9502181, Japan
[2] Niigata Univ, Dept Phys, Niigata 9502181, Japan
来源：
PHYSICAL REVIEW D | 2010年 / 82卷 / 03期
关键词：
CHIRAL-ODD CONTRIBUTION; DRELL-YAN; SIVERS ASYMMETRIES; HARD-SCATTERING; PION-PRODUCTION; CROSS-SECTIONS; MOMENTUM; COLLINS; JETS;
D O I：
10.1103/PhysRevD.82.034009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We analyze the single transverse-spin asymmetry (SSAs) for inclusive hadron production in the pp collision at RHIC based on the twist-3 mechanism in QCD. As an origin of SSAs, we take into account of all kinds of pole contributions associated with the twist-3 quark-gluon correlation functions in the polarized proton. By the inclusion of the soft-fermion-pole contribution in addition to the soft-gluon-pole contribution, we find SSAs observed at RHIC are better described for all kinds of mesons. P-T dependence of the asymmetry and the comparison with the FNAL data are also presented.
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页数：12
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