Gluon saturation effects on J/Psi production in heavy ion collisions

Details Gluon saturation effects on J/Psi production in heavy ion collisions Gluon saturation effects on J/Psi production in heavy ion collisions

2008-08-21

arxiv.org/abs/0808.2954v2

Phys.Rev.Lett.102:152301,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures; v2: typos corrected; presentation improved

Scientific paper

10.1103/PhysRevLett.102.152301

We consider a novel mechanism for J/Psi production in nuclear collisions arising due to the high density of gluons. We calculate the resulting J/Psi production cross section as a function of rapidity and centrality. We evaluate 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 that can be disentangled from the quark-gluon plasma effects.

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