Single transverse-spin asymmetries in hadronic pion production

被引：357
|
作者：
Qiu, JW [1 ]
Sterman, G
机构：
[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[2] SUNY Stony Brook, Inst Theoret Phys, Stony Brook, NY 11794 USA
来源：
PHYSICAL REVIEW D | 1999年 / 59卷 / 01期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevD.59.014004
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We analyze single transverse-spin asymmetries for hadronic pion production at large transverse momenta using QCD factorization. In the large x(F) region, leading contributions to the asymmetries are naturally produced by twist-3 parton correlation functions that couple quark fields and gluon held strengths. With a simple model for these matrix elements, leading-order asymmetries calculated from QCD are consistent with data on pion production from Fermilab, and can be used to predict single-spin asymmetries at BNL RHIC. We argue that our perturbative calculation for the asymmetries is relevant to pion transverse momenta as low as a few GeV.
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收藏
页数：29
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