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

  • We analyze the hadronic freeze-out in ultra-relativistic heavy ion collisions at RHIC in a transport approach which combines hydrodynamics for the early, dense, deconfined stage of the reaction with a microscopic non-equilibrium 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 di er drastically for the individual hadrons species. Freeze-out radii distributions are similar in width for most hadron species, even though the 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 SPS to RHIC energies.

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Author:Steffen A. BassORCiDGND, Adrian Bogdan DumitruORCiDGND, Marcus BleicherORCiDGND, Larissa BravinaORCiDGND, Eugene E. ZabrodinORCiD, Horst StöckerORCiDGND, Walter GreinerGND
Document Type:Preprint
Date of Publication (online):2005/12/05
Year of first Publication:1999
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/12/05
Tag:Hadron; schwere Ionen Kollision; ultrarelativistische
hadronic freeze-out; ultra-relativistic heavy ion collision
Source:Phys.Rev.C60:021902,1999. http://www.arxiv.org/abs/nucl-th/9902062v2, Version 2
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht