COMPLETE NEXT-TO-LEADING ORDER CORRECTIONS FOR DIRECT PHOTON PRODUCTION BY A POLARIZED BEAM AND TARGET

被引：39

作者：

CONTOGOURIS, AP ^{[1
]}

KAMAL, B ^{[1
]}

MEREBASHVILI, Z ^{[1
]}

TKACHOV, FV ^{[1
]}

机构：

[1] UNIV ATHENS,GR-15771 ATHENS,GREECE

来源：

PHYSICS LETTERS B | 1993年 / 304卷 / 3-4期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0370-2693(93)90304-Z

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Complete next-to-leading order corrections (HOC) to large-p(T) direct photon production by a longitudinally polarized proton beam and target are determined; the calculation involves one-loop corrections to gq over arrow pointing right --> gammaq and qqBAR over arrow pointing right --> gammag as well as the subprocesses gg over arrow pointing right --> gammaqqBAR and qq over arrow pointing right --> gammaqq. K-factors well exceeding unity and polarized cross sections well measurable are found. Certain aspects of the HOC are also discussed.

引用

页码：329 / 333

页数：5

共 21 条

[1]

Altarelli G., 1989, Particle World, V1, P40

[2] THE ANOMALOUS GLUON CONTRIBUTION TO POLARIZED LEPTOPRODUCTION [J].