Isolated photons at hadron colliders at O(alpha alpha(s)(2)) .2. Spin-dependent case

被引：8

作者：

Gordon, LE

机构：

[1] High Energy Physics Division, Argonne National Laboratory, Argonne

来源：

NUCLEAR PHYSICS B | 1997年 / 501卷 / 01期

关键词：

prompt photons; QCD; isolation; spin; polarized; unpolarized;

D O I：

10.1016/S0550-3213(97)00340-4

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The cross section for inclusive prompt photon production with polarized hadron beams is calculated at order alpha alpha(s)(2) using the phase-space slicing or analytic/Monte Carlo method. Isolation cuts are placed on the photon and the results are compared to a previous fully analytic calculation. Numerical results for the isolated cross section are presented for (p) over right arrow (p) over right arrow --> gamma + X at RHIC centre-of-mass energies with plausible isolation parameters using the most modem polarized parton densities evolved in next-to-leading order QCD. The perturbative stability of the asymmetries and scale dependence of the results are briefly discussed. (C) 1997 Elsevier Science B.V.

引用

页码：197 / 206

页数：10

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