Hadronic freeze-out following a first order hadronization phase transition in ultrarelativistic heavy-ion collisions

Journal Article · Sun Aug 01 04:00:00 EDT 1999 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.60.021902· OSTI ID:357329

Bass, S A ^[1]; Dumitru, A ^[2]; Bleicher, M; Bravina, L; Zabrodin, E; Stoecker, H; Greiner, W ^[3]

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1. Department of Physics, Duke University, Durham, North Carolina 27708-0305 (United States)
2. Department of Physics, Yale University, New Haven, Connecticut 06520 (United States)
3. Institut fuer Theoretische Physik, Johann Wolfgang Goethe Universitaet, Robert Mayer Strasse 8-10, D-60054 Frankfurt am Main (Germany)

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 {ital 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 {Omega}{sup {minus}} 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{percent} when going from CERN Super Proton Synchrotron to RHIC energies. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 357329
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 60; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HADRONS
HEAVY ION REACTIONS
PHASE TRANSFORMATIONS
RELATIVISTIC RANGE