Latest documents http://publikationen.stub.uni-frankfurt.de/index/index/ Tue, 12 Jul 2005 10:33:38 +0100 Tue, 12 Jul 2005 10:33:38 +0100 http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/3110 Noneequilibrium models (three-fluid hydrodynamics and UrQMD) use to discuss the uniqueness of often proposed experimental signatures for quark matter formation in relativistic heavy ion collisions. It is demonstrated that these two models - although they do treat the most interesting early phase of the collisions quite differently(thermalizing QGP vs. coherent color fields with virtual particles) - both yields a reasonable agreement with a large variety of the available heavy ion data. Stefan Scherer; Steffen A. Bass; Marcus Bleicher; Mohamed Belkacem; Larissa V. Bravina; Jörg Brachmann; Adrian Dumitru; Christoph Ernst; Lars Gerland; Markus Hofmann; Ludwig Neise; Manuel Reiter; Sven Soff; Christian Spieles; Henning Weber; Eugene E. Zabrodin; Detlef Zschiesche; Joachim A. Maruhn; Horst Stöcker; Walter Greiner article http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/3110 Wed, 07 Dec 2005 10:33:38 +0100 http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/3367 Nonequilibrium models (three-fluid hydrodynamics, UrQMD, and quark molecular dynamics) are used to discuss the uniqueness of often proposed experimental signatures for quark matter formation in relativistic heavy ion collisions from the SPS via RHIC to LHC. It is demonstrated that these models - although they do treat the most interesting early phase of the collisions quite differently (thermalizing QGP vs. coherent color fields with virtual particles) -- all yield a reasonable agreement with a large variety of the available heavy ion data. Hadron/hyperon yields, including J/Psi meson production/suppression, strange matter formation, dileptons, and directed flow (bounce-off and squeeze-out) are investigated. Observations of interesting phenomena in dense matter are reported. However, we emphasize the need for systematic future measurements to search for simultaneous irregularities in the excitation functions of several observables in order to come close to pinning the properties of hot, dense QCD matter from data. The role of future experiments with the STAR and ALICE detectors is pointed out. Stefan Scherer; Steffen A. Bass; Mohamed Belkacem; Marcus Bleicher; Jörg Brachmann; Adrian Dumitru; Christoph Ernst; Lars Gerland; Nils Hammon; Markus Hofmann; Jens Konopka; Ludwig Neise; Manuel Reiter; Stefan Schramm; Sven Soff; Christian Spieles; Henning Weber; Detlef Zschiesche; Joachim A. Maruhn; Horst Stöcker; Walter Greiner preprint http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/3367 Tue, 01 Nov 2005 09:26:33 +0100 http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/4784 Compelling evidence for the creation of a new form of matter has been claimed to be found in Pb+Pb collisions at SPS. We discuss the uniqueness of often proposed experimental signatures for quark matter formation in relativistic heavy ion collisions. It is demonstrated that so far none of the proposed signals like J/psi meson production/suppression, strangeness enhancement, dileptons, and directed flow unambigiously show that a phase of deconfined matter has been formed in SPS Pb+Pb collisions. We emphasize the need for systematic future measurements to search for simultaneous irregularities in the excitation functions of several observables in order to come close to pinning the properties of hot, dense QCD matter from data. Detlef Zschiesche; Steffen A. Bass; Marcus Bleicher; Jörg Brachmann; Lars Gerland; Kerstin Paech; Stefan Scherer; Sven Soff; Christian Spieles; Henning Weber; Horst Stöcker; Walter Greiner preprint http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/4784 Thu, 14 Apr 2005 16:28:30 +0200