Inclusive prompt photon production in hadronic final states of e(+)e(-) annihilation

被引:6
作者
Berger, EL [1 ]
Guo, XF [1 ]
Qiu, JW [1 ]
机构
[1] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011
来源
PHYSICAL REVIEW D | 1996年 / 53卷 / 03期
关键词
D O I
10.1103/PhysRevD.53.1124
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We provide complete analytic expressions for the inclusive prompt photon production cross section in hadronic final states of e(+)e(-) annihilation reactions through one-loop order in quantum chromodynamics perturbation theory. Computed explicitly are direct photon production through first order in the electromagnetic strength alpha(em) and the quark-to-photon and gluon-to-photon fragmentation contributions through first order in the strong coupling alpha(s). The full angular dependence of the cross sections is displayed, separated into transverse (1 + cos(2) theta(gamma)) and longitudinal (sin(2) theta(gamma)) components, where theta(gamma) specifies the direction of the photon with respect to the e(+)e(-) collision axis. We discuss extraction of fragmentation functions from e(+)e(-) data.
引用
收藏
页码:1124 / 1141
页数:18
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