Charmonium dissociation by mesons in heavy-ion collisions

Details Charmonium dissociation by mesons in heavy-ion collisions Charmonium dissociation by mesons in heavy-ion collisions

2006-10-11

arxiv.org/abs/hep-ph/0610122v1

Nucl.Phys.A782:396-399,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures; Talk given at ICTP 5th International Conference on Perspectives in Hadronic Physics, Trieste, Italy, 22-26

Scientific paper

10.1016/j.nuclphysa.2006.10.022

The charmonium dissociation by mesons in relativistic heavy-ion reactions is analyzed within the Regge approach. It is shown that the inclusion of the initial and final state interactions in the dissociation of J/Psi to bar{D}* D* close to threshold increases the cross section significantly and can not be neglected in comparison to the total dissociation rate. This is due to resonant bar{D}*-D* interactions in sqrt{s} close to the masses of the Psi(4.04) and Psi(4.16) mesons. We also investigate thermal effects of the (c bar{c}) width for such processes in the medium. All these effects change both the magnitude and the shape of the cross section as a function of sqrt{s}. The results obtained should be applied in the analysis of open and hidden charm production in heavy-ion collisions.

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