Gluon shadowing and charmonium/bottonium production on nuclear targets

Gupta, Sourendu ; Staz, Helmut (1992) Gluon shadowing and charmonium/bottonium production on nuclear targets Zeitschrift für Physik C Particles and Fields, 55 (3). pp. 391-396. ISSN 0170-9739

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Official URL: http://www.springerlink.com/content/x57l7426800263...

Related URL: http://dx.doi.org/10.1007/BF01565096

Abstract

We examine the suppression of J/ω, ω' and Ψ production on nuclear targets, as observed for proton and pion beams of energies from 200 to 800 GeV. We find that this suppression leads to a universal scaling curve, which indicates that it is due to nuclear modifications of the gluon density ("shadowing"). A parametrisation of the nuclear effect on the gluon density is extracted from the data and used to obtain quantitative estimates for corresponding effects in high-energy heavyion collisions.

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