Chemical freeze-out parameters at RHIC from microscopic model calculations

  • The relaxation of hot nuclear matter to an equilibrated state in the central zone of heavy-ion collisions at energies from AGS to RHIC is studied within the microscopic UrQMD model. It is found that the system reaches the (quasi)equilibrium stage for the period of 10-15 fm/c. Within this time the matter in the cell expands nearly isentropically with the entropy to baryon ratio S/A = 150 - 170. Thermodynamic characteristics of the system at AGS and at SPS energies at the endpoints of this stage are very close to the parameters of chemical and thermal freeze-out extracted from the thermal fit to experimental data. Predictions are made for the full RHIC energy square root s = 200$ AGeV. The formation of a resonance-rich state at RHIC energies is discussed.

Download full text files

Export metadata

Additional Services

Share in Twitter Search Google Scholar
Metadaten
Author:Larissa BravinaORCiDGND, Eugene E. Zabrodin, Steffen A. BassORCiDGND, Amand FäßlerGND, Christian FuchsGND, Mark I. GorensteinORCiDGND, Walter GreinerGND, Sven SoffORCiD, Horst StöckerORCiDGND, Henning WeberGND
URN:urn:nbn:de:hebis:30-7114
DOI:https://doi.org/10.1016/S0375-9474(01)01385-9
ISSN:0375-9474
ISSN:1873-1554
ArXiv Id:http://arxiv.org/abs/nucl-th/0104023v1
Document Type:Preprint
Language:English
Year of Completion:2001
Date of first Publication:2001/04/06
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/04/14
Page Number:4
First Page:1
Last Page:4
Note:
Später erschienen in: Nuclear physics. A, Nuclear and hadronic physics, 698.2002, Nr. 1-4, S. 383-386, doi:10.1016/S0375-9474(01)01385-9
Source:http://de.arxiv.org/abs/nucl-th/0104023 , Talk at the conference Quark Matter'2001, 4 pages, to appear in Nucl. Phys. A
HeBIS-PPN:128802073
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht