dorsal/arxiv
View SchemaThe directed flow maximum near c_s=0
| Authors | J. Brachmann, A. Dumitru, H. Stöcker, W. Greiner |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9912014 |
| URL | https://arxiv.org/abs/nucl-th/9912014 |
| DOI | 10.1007/s100500070077 |
| Journal | Eur.Phys.J. A8 (2000) 549-552 |
Abstract
We investigate the excitation function of quark-gluon plasma formation and of directed in-plane flow of nucleons in the energy range of the BNL-AGS and for the E(Lab)=40AGeV 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, E(Lab)=10AGeV. A substantial decrease of the isentropic velocity of sound, however, requires higher energies, E(Lab)=40AGeV. We show the effect on the flow of nucleons in the reaction plane. According to our model calculations, kinematic requirements and EoS effects work hand-in-hand at E(Lab)=40AGeV 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.
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"abstract": "We investigate the excitation function of quark-gluon plasma formation and of\ndirected in-plane flow of nucleons in the energy range of the BNL-AGS and for\nthe E(Lab)=40AGeV Pb+Pb collisions performed recently at the CERN-SPS. We\nemploy the three-fluid model with dynamical unification of kinetically\nequilibrated fluid elements. Within our model with first-order phase transition\nat high density, droplets of QGP coexisting with hadronic matter are produced\nalready at BNL-AGS energies, E(Lab)=10AGeV. A substantial decrease of the\nisentropic velocity of sound, however, requires higher energies, E(Lab)=40AGeV.\nWe show the effect on the flow of nucleons in the reaction plane. According to\nour model calculations, kinematic requirements and EoS effects work\nhand-in-hand at E(Lab)=40AGeV to allow the observation of the dropping velocity\nof sound via an increase of the directed flow around midrapidity as compared to\ntop BNL-AGS energy.",
"arxiv_id": "nucl-th/9912014",
"authors": [
"J. Brachmann",
"A. Dumitru",
"H. St\u00f6cker",
"W. Greiner"
],
"categories": [
"nucl-th",
"hep-ph",
"nucl-ex"
],
"doi": "10.1007/s100500070077",
"journal_ref": "Eur.Phys.J. A8 (2000) 549-552",
"title": "The directed flow maximum near c_s=0",
"url": "https://arxiv.org/abs/nucl-th/9912014"
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