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

页码：673 / 678

页数：6

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