J/Psi production in heavy ion collisions and gluon saturation

Details J/Psi production in heavy ion collisions and gluon saturation J/Psi production in heavy ion collisions and gluon saturation

2008-09-17

arxiv.org/abs/0809.2933v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 13 figures; v2: many typos corrected, presentation improved

Scientific paper

We calculate the inclusive J/Psi production in heavy ion collisions including the effects of gluon saturation in the wave functions of the colliding nuclei. We argue that the dominant production mechanism in proton--nucleus and nucleus--nucleus collisions for heavy nuclei is different from the one in hadron-hadron interactions. We find that the rapidity distribution of primary J/Psi production is more peaked around midrapidity than the analogous distribution in elementary pp collisions. We discuss the consequences of this fact on the experimentally observed J/Psi suppression in Au-Au collisions at RHIC energies.

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