HIGHER-ORDER QCD CORRECTIONS TO THE PHOTOPRODUCTION OF A DIRECT PHOTON AT HERA

被引：66
作者：
AURENCHE, P
CHIAPPETTA, P
FONTANNAZ, M
GUILLET, JP
PILON, E
机构：
[1] FAC SCI LUMINY,CTR PHYS THEOR,F-13288 MARSEILLE,FRANCE
[2] UNIV PARIS 11,PHYS THEOR & HAUTES ENERGIES LAB,F-91405 ORSAY,FRANCE
来源：
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1992年 / 56卷 / 04期
关键词：
D O I：
10.1007/BF01474732
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 contribution of resolved photons to the photoproduction cross section of direct photons is reexamined. Higher order, O(alpha2alpha(s)) QCD corrections to this contribution are calculated and turn out to be important at HERA energies. The observation of direct photons in the medium-p(perpendicular-to), range (p(perpendicular-to) is similar to 5 GeV/c) should provide the opportunity to measure the gluon content of the photon.
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页码：589 / 599
页数：11
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