Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-10-23
Phys.Rev. C68 (2003) 064901
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 6 figures, accepted for publication in Phys. Rev. C
Scientific paper
10.1103/PhysRevC.68.064901
Statistical hadronization models are extremly succesful in describing measured ratios of hadrons produced in heavy-ion collisions for a wide range of beam energies from SIS to RHIC. Using the idea of statistical hadronization at the phase boundary within the framework of a recently proposed dynamical model for the thermodynamics of fireballs, we establish a relation between the equation of state (EoS) in the partonic phase probed at the phase transition temperature T_C and the measured hadron ratios. In this way, the ratios can be predicted parameter-free. We demonstrate that this framework gives a consistent description of conditions both at SPS and RHIC. As the data on dilepton emission from heavy ion collisions give evidence for strong in-medium modifications of hadronic properties, we schematically investigate the sensitivity of our results to such modifications and qualitatively sketch a consistent scenario involving such in-medium effects.
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