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.
Author: | Jörg BrachmannGND, Adrian Bogdan DumitruORCiDGND, Horst StöckerORCiDGND, Walter GreinerGND |
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URN: | urn:nbn:de:hebis:30-22226 |
Document Type: | Preprint |
Language: | English |
Date of Publication (online): | 2005/11/23 |
Year of first Publication: | 2000 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2005/11/23 |
Tag: | Nucleon; Quark Gluon Plasma directed flow; flow of nucleons; quark-gluon plasma |
Source: | Eur.Phys.J.A8:549-552,2000, http://www.arxiv.org/abs/nucl-th/9912014, Version 3 |
HeBIS-PPN: | 185389562 |
Institutes: | Physik / Physik |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Licence (German): | Deutsches Urheberrecht |