Abstract
We present results on hadronic resonance production in high energy nuclear collisions from the UrQMD hybrid model. In particular we are interested in the effect of the final hadronic stage on the properties of resonances observable at RHIC and LHC experiments. We investigate weather these observable properties can be used to pinpoint the transition energy density from the QGP phase to the hadronic phase.
Highlights
The interpretation of the results of ultrarelativistic heavy ion collisions is one of the most challenging problems in theoretical nuclear physics presently
Presently investigated at the Relativistic Heavy Ion Collider (RHIC) at the Brookhaven national laboratory and at the Large Hadron Collider (LHC) at CERN, more than thousand particles are observed in central collisions
The multiplicity and the single particle transverse momentum spectra at midrapidity of the different particle species are of interest by their own right, the purpose of the experiments is to ¿nd out whether during the reaction the matter has made a transition towards a new state of matter, a Quark-Gluon Plasma (QGP)
Summary
The interpretation of the results of ultrarelativistic heavy ion collisions is one of the most challenging problems in theoretical nuclear physics presently. After hadronization the hadrons can still have interactions which may be the origin of the apparent suppression of resonances In this scenario it is the essential question whether the observed resonance yield reÀects the energy density at which the transition between the hydrodynamical and the kinetic stage takes place. In these proceedings we will demonstrate that according to the results of the URQMD hybrid models the ¿nally observed spectra are close related to the critical energy density at which the transition takes place
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