Resolving the J/ψRHIC puzzles at LHC

Details Resolving the J/ψRHIC puzzles at LHC Resolving the J/ψRHIC puzzles at LHC

2009-02-26

arxiv.org/abs/0902.4664v1

J.Phys.G36:064054,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

SQM2008 proceedings, 6 pages

Scientific paper

10.1088/0954-3899/36/6/064054

Experiments with gold-gold collisions at RHIC have revealed (i) stronger suppression of charmonium production at forward rapidity than at midrapidity and (ii) the similarity between the suppression degrees at RHIC and SPS energies. To describe these findings we employ the model that includes nuclear shadowing effects, calculated within the Glauber-Gribov theory, rapidity-dependent absorptive mechanism, caused by energy-momentum conservation, and dissociation and recombination of the charmonium due to interaction with co-moving matter. The free parameters of the model are tuned and fixed by comparison with experimental data at lower energies. A good agreement with the RHIC results concerning the rapidity and centrality distributions is obtained for both heavy Au+Au and light Cu+Cu colliding system. For pA and A+A collisions at LHC the model predicts stronger suppression of the charmonium and bottomonium yields in stark contrast to thermal model predictions.

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