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
收藏
页码：329 / 333
页数：5
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