Tübingen 2003 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 33: Physik mit schweren Ionen III
HK 33.4: Vortrag
Mittwoch, 19. März 2003, 15:00–15:15, E
Statistical hadronization of charm at SPS, RHIC and LHC — •Anton Andronic1, Peter Braun-Munzinger1, Krzysztof Redlich2, and Johanna Stachel3 — 1GSI 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.