Longitudinal fluid-dynamics for ultrarelativistic heavy-ion collisions

We develop a 1+1 dimensional hydrodynamical model for central heavy-ion collisions at ultrarelativistic energies. Deviations from Bjorken's scaling are taken into account by implementing finite-size profiles for the initial energy density. The calculated rapidity distributions of pions, kaons and antiprotons in central Au+Au collisions at the c.m. energy 200 AGeV are compared with experimental data of the BRAHMS Collaboration. The sensitivity of the results to the choice of the equation of state, the parameters of initial state and the freeze-out conditions is investigated. The best fit of experimental data is obtained for a soft equation of state and Gaussian-like initial profiles of the energy density.

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Metadaten
Author:Leonid M. Satarov, A.V. Merdeev, Igor N. Mishustin, Horst Stöcker
URN:urn:nbn:de:hebis:30-32294
Document Type:Preprint
Language:English
Date of Publication (online):31.10.2006
Year of first Publication:2006
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Tag:equation of state ; hydrodynamics ; pions
Source:http://www.arxiv.org/abs/hep-ph/0606074, preprint submitted to Elsevier Science
HeBIS PPN:190701064
Institutes:Physik
Frankfurt Institute for Advanced Studies
Dewey Decimal Classification:530 Physik
PACS-Classification:12.38.Mh Quark-gluon plasma (see also 25.75.Nq Quark deconfinement, quark-gluon plasma production and phase transitions in relativistic heavy ion collisions; see also 21.65.Qr Quark matter)
24.10.Nz Hydrodynamic models
25.75.-q Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions)
25.75.Nq Quark deconfinement, quark-gluon plasma production, and phase transitions (see also 12.38.Mh Quark-gluon plasma in quantum chromodynamics; 21.65.Qr Quark matter in nuclear matter)
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen ohne Print on Demand

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