1999/02/28 by Steffen A. Bass, S. A. Bass, A. Dumitru +9 · 6 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.60.021902
published as Phys.Rev.C60:021902,1999 · 11 pages, 4 eps-figures included, revised version
openalex publication_date 1999/07/22 · arxiv created 1999/08/25 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We analyze the hadronic freeze-out in ultrarelativistic heavy-ion collisions at Relativistic Heavy Ion Collider (RHIC) in a transport approach that combines hydrodynamics for the early, dense, deconfined stage of the reaction with a microscopic nonequilibrium model for the later hadronic stage at which the hydrodynamic equilibrium assumptions are not valid. With this ansatz we are able to self-consistently calculate the freeze-out of the system and determine space-time hypersurfaces for individual hadron species. The space-time domains of the freeze-out for several hadron species are found to be actually four dimensional, and differ drastically for the individual hadrons species. Freeze-out radii distributions are similar in width for most hadron species, even though the \ensuremathΩ^\ensuremath- is found to be emitted rather close to the phase boundary and shows the smallest freeze-out radii and times among all baryon species. The total lifetime of the system does not change by more than 10% when going from CERN Super Proton Synchrotron to RHIC energies.