Abstract
Statistical hadronization models are extremely successful 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 in the partonic phase probed at the phase transition temperature 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.
- Received 28 May 2003
DOI:https://doi.org/10.1103/PhysRevC.68.064901
©2003 American Physical Society