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Tübingen 2003 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 33: Physik mit schweren Ionen III

HK 33.4: Talk

Wednesday, March 19, 2003, 15:00–15:15, E

Statistical hadronization of charm at SPS, RHIC and LHC — •Anton Andronic1, Peter Braun-Munzinger1, Krzysztof Redlich2, and Johanna Stachel31GSI Darmstadt — 2University of Wroclaw — 3University of Heidelberg

The original idea of statistical hadronization of charm quarks [1] has sparked an intense activity in this field [2]. Initial interest focussed on the available SPS data on J/ψ production. However, the largest differences between results from the statistical coalescence scenario and more conventional models are expected at collider energies. We study the production of charmonia and charmed hadrons for nucleus-nucleus collisions at SPS, RHIC, and LHC energies within the framework of the statistical hadronization model. Results from this model are compared to the measured centrality dependence of J/ψ production at SPS energy. These data can be well described by the model, if the open charm cross section is increased by a factor of 2 compared to pQCD calculations. We further provide predictions for the centrality dependence of the production of open and hidden charm mesons at RHIC and LHC.
[1] P. Braun-Munzinger and J. Stachel, Phys. Lett. B490 (2000) 196; Nucl. Phys. A690 (2001) 119c. [2] M. Gorenstein et al., Phys. Lett. B509 (2001) 277; L. Grandchamp and R. Rapp, Phys. Lett. B523 (2001) 60.

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