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

Manuel Drees; C. S. Kim

doi:10.1007/BF01559746

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

Manuel Drees, C. S. Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	673-678
Number of pages	6
Journal	Zeitschrift für Physik C Particles and Fields
Volume	53
Issue number	4
DOIs	https://doi.org/10.1007/BF01559746
Publication status	Published - 1992 Dec

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1007/BF01559746

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title = "Associate J/ψ+γ production: a clean probe of gluon densities",

abstract = "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.",

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T2 - a clean probe of gluon densities

AU - Drees, Manuel

AU - Kim, C. S.

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Y1 - 1992/12

N2 - 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.

AB - 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.

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JF - Zeitschrift für Physik C Particles and Fields

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ER -

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

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