QCD selection rules in polarized hadron collisions

被引：39

作者：

Jaffe, RL

Saito, N

机构：

[1] MIT,DEPT PHYS,CAMBRIDGE,MA 02139

[2] HARVARD UNIV,LYMAN LAB PHYS,CAMBRIDGE,MA 02138

[3] RIKEN,INST PHYS & CHEM RES,RADIAT LAB,WAKO,SAITAMA 35101,JAPAN

来源：

PHYSICS LETTERS B | 1996年 / 382卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(96)00560-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Plans are underway to measure spin asymmetries at large momentum transfer in hadron hadron collisions at RHIC and elsewhere. Proposals have focused on measuring quark transversity and quark and gluon helicity distributions in the nucleon. These experiments will also provide a strong and simple test of perturbative QCD, namely that A(TT)/A(LL) << 1 in pp --> 2 jets + X and several related processes, whereas A(TT)/A(LL) similar to 1 in Drell-Yan production of muon pairs. The prediction tests the helicity, twist and chirality selection rules of perturbative QCD that form the foundation for the analysis of spin dependent hard processes. We estimate the ratio A(TT)/A(LL) numerically for polarized protons at RHIC.

引用

页码：165 / 172

页数：8

共 22 条

[1]

ALTERELLI G, 1988, PHYS LETT B, V212, P391

[2] TRANSVERSELY POLARIZED PARTON DENSITIES, THEIR EVOLUTION AND THEIR MEASUREMENT [J].