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.
Author: | Larissa BravinaORCiDGND, Eugene E. ZabrodinORCiD, Steffen A. BassORCiDGND, Amand FäßlerGND, Christian FuchsGND, Mark I. GorensteinORCiDGND, Walter GreinerGND, Sven SoffORCiD, Horst StöckerORCiDGND, Henning WeberGND |
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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): | Deutsches Urheberrecht |