Flow in conical shock waves : a signal for the deconfinement transition?

We investigate the hydrodynamical flow of nuclear matter in a conical-shock-wave scenario of a central, asymmetric heavy-ion collision. This work is motivated by a suggestion of Chapline and Granik that the creation of a
We investigate the hydrodynamical flow of nuclear matter in a conical-shock-wave scenario of a central, asymmetric heavy-ion collision. This work is motivated by a suggestion of Chapline and Granik that the creation of a deconfined phase of quarks and gluons behind the shock will appreciably increase the deflection angle of the matter flow. We employ several hadron matter equations of state recently suggested to solve the conical-shock-wave problem and compare the results with a calculation using the bag equation of state. We find that large differences in the deflection angle obtained in the rest frame of the shock vanish in the laboratory system. However, a signature for the deconfinement transition may be the transverse momentum of the matter flow, which is up to a factor of 2 larger for the quark-gluon plasma. Thus, an excitation function of the mean transverse momentum would show an increase at a certain bombarding energy, signaling the onset of the deconfinement transition.
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Metadaten
Author:Dirk-Hermann Rischke, Horst Stöcker, Walter Greiner
URN:urn:nbn:de:hebis:30-27248
Document Type:Article
Language:English
Date of Publication (online):2006/06/02
Year of first Publication:1990
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2006/06/02
Source:Phys. Rev. D 42, 2283~V2292 (1990) ; ©1990 The American Physical Society ; http://link.aps.org/abstract/PRD/v42/p2283
HeBIS PPN:188717153
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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