Gluon Saturation Effects on J/Psi Production in Heavy Ion Collisions

Date
2009-01-01
Authors
Kharzeev, Dmitri
Levin, Eugene
Tuchin, Kirill
Nardi, Marzia
Tuchin, Kirill
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Physics and Astronomy
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Physics and Astronomy
Abstract

We consider a novel mechanism for J/Psi production in nuclear collisions arising due to the high density of gluons. The resulting J/Psi production cross section is evaluated as a function of rapidity and centrality. We compute the nuclear modification factor and show that the rapidity distribution of the produced J/Psi ’s is significantly more narrow in AA collisions due to the gluon saturation effects. Our results indicate that gluon saturation in the colliding nuclei is a significant source of J/Psi suppression and can explain the experimentally observed rapidity and centrality dependencies of the effect.

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This article is from Physical Review Letters 102 (2009): 152301, doi: 10.1103/PhysRevLett.102.152301. Posted with permission.

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