The directed flow maximum near c(s) = 0
- We investigate the excitation function of quark-gluon plasma formation and of directed in-plane flow of nucleons in the energy range of the BNLAGS and for the Ekin Lab = 40A GeV Pb+Pb collisions performed recently at the CERN-SPS. We employ the three-fluid model with dynamical unification of kinetically equilibrated fluid elements. Within our model with first-order phase transition at high density, droplets of QGP coexisting with hadronic matter are produced already at BNL-AGS energies, Ekin Lab C 10A GeV. A substantial decrease of the isentropic velocity of sound, however, requires higher energies, Ekin Lab C 40A GeV. We show the e ect on the flow of nucleons in the reaction plane. According to our model calculations, kinematic requirements and EoS effects work hand-in-hand at Ekin Lab = 40A GeV to allow the observation of the dropping velocity of sound via an increase of the directed flow around midrapidity as compared to top BNL-AGS energy.
Verfasserangaben: | Jörg BrachmannGND, Adrian Bogdan DumitruORCiDGND, Horst StöckerORCiDGND, Walter GreinerGND |
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URN: | urn:nbn:de:hebis:30-22226 |
Dokumentart: | Preprint |
Sprache: | Englisch |
Datum der Veröffentlichung (online): | 23.11.2005 |
Jahr der Erstveröffentlichung: | 2000 |
Veröffentlichende Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Datum der Freischaltung: | 23.11.2005 |
Freies Schlagwort / Tag: | Nucleon; Quark Gluon Plasma directed flow; flow of nucleons; quark-gluon plasma |
Quelle: | Eur.Phys.J.A8:549-552,2000, http://www.arxiv.org/abs/nucl-th/9912014, Version 3 |
HeBIS-PPN: | 185389562 |
Institute: | Physik / Physik |
DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Lizenz (Deutsch): | Deutsches Urheberrecht |