Associate J/ψ+γ production: a clean probe of gluon densities

Manuel Drees, C. S. Kim

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


We discuss the associate production of a J/ψ meson and a photon at {Mathematical expression} (or pp) and ep colliders. By requiring the J/ψ to decay into an e+e- or μ+μ- 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 {Mathematical expression} and HERA ep colliders.

Original languageEnglish
Pages (from-to)673-678
Number of pages6
JournalZeitschrift für Physik C Particles and Fields
Issue number4
Publication statusPublished - 1992 Dec

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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