ASSOCIATE J/PSI+GAMMA PRODUCTION - A CLEAN PROBE OF GLUON DENSITIES

被引：23
|
作者：
DREES, M [1 ]
KIM, CS [1 ]
机构：
[1] UNIV DURHAM,DEPT PHYS,DURHAM DH1 3LE,ENGLAND
来源：
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1992年 / 53卷 / 04期
关键词：
D O I：
10.1007/BF01559746
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：
We discuss the associate production of a J/psi meson and a photon at ppBAR (or pp) and ep colliders. By requiring the J/psi to decay into an e+ e- or mu+ mu- pair, we end up with an exceptionally clean final state. Furthermore, in leading order it can only be produced via gluon fusion. This process can therefore serve as a very clean probe of the gluon densities inside the proton as well as the photon. Numerical results are presented for the tevatron ppBAR and HERA ep colliders.
引用
收藏
页码：673 / 678
页数：6
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