TY  - INPR
A1  - Zschiesche, Detlef
A1  - Schramm, Stefan
A1  - Stöcker, Horst
A1  - Greiner, Walter
T1  - Space-time evolution and HBT analysis of relativistic heavy ion collisions in a chiral SU(3) x SU(3) model
N2  - The space-time dynamics and pion-HBT radii in central heavy ion-collisions at CERN-SPS and BNL-RHIC are investigated within a hydrodynamic simulation. The dependence of the dynamics and the HBT-parameters on the EoS is studied with different parametrizations of a chiral SU(3) sigma omega model. The selfconsistent collective expansion includes the e ects of e ective hadron masses, generated by the nonstrange and strange scalar condensates. Different chiral EoS show di erent types of phase transitions and even a crossover. The influence of the order of the phase transition and of the latent heat on the space-time dynamics and pion-HBT radii is studied. A small latent heat, i.e. a weak first-order chiral phase transition, or a smooth crossover lead to distinctly di erent HBT predictions than a strong first order phase transition. A quantitative description of the data, both at SPS energies as well as at RHIC energies, appears di cult to achieve within the ideal hydrodynamic approach using the SU(3) chiral EoS. A strong first-order quasi-adiabatic chiral phase transition seems to be disfavored by the pion-HBT data from CERN-SPS and BNL-RHIC.
KW  - Raum Zeit
KW  - schwere Ion-Kollisionen
KW  - space-time
KW  - heavy ion collisions
Y1  - 2002
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3264
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-21462
ER  -