dorsal/arxiv
View SchemaParton cascade description of relativistic heavy-ion collisions at CERN SPS energies ?
| Authors | Klaus Geiger, Dinesh Kumar Srivastava |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9706002 |
| URL | https://arxiv.org/abs/nucl-th/9706002 |
| DOI | 10.1103/PhysRevC.56.2718 |
| Journal | Phys.Rev.C56:2718-2725,1997 |
Abstract
We examine Pb+Pb collisions at CERN SPS energy 158 A GeV, by employing the earlier developed and recently refined parton-cascade/cluster-hadronization model and its Monte Carlo implementation. This space-time model involves the dynamical interplay of perturbative QCD parton production and evolution, with non-perturbative parton-cluster formation and hadron production through cluster decays. Using computer simulations, we are able to follow the entwined time-evolution of parton and hadron degrees of freedom in both position and momentum space, from the instant of nuclear overlap to the final yield of particles. We present and discuss results for the multiplicity distributions, which agree well with the measured data from the CERN SPS, including those for K mesons. The transverse momentum distributions of the produced hadrons are also found to be in good agreement with the preliminary data measured by the NA49 and the WA98 collaboration for the collision of lead nuclei at the CERN SPS. The analysis of the time evolution of transverse energy deposited in the collision zone and the energy density suggests an existence of partonic matter for a time of more than 5 fm.
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"abstract": "We examine Pb+Pb collisions at CERN SPS energy 158 A GeV, by employing the\nearlier developed and recently refined parton-cascade/cluster-hadronization\nmodel and its Monte Carlo implementation. This space-time model involves the\ndynamical interplay of perturbative QCD parton production and evolution, with\nnon-perturbative parton-cluster formation and hadron production through cluster\ndecays. Using computer simulations, we are able to follow the entwined\ntime-evolution of parton and hadron degrees of freedom in both position and\nmomentum space, from the instant of nuclear overlap to the final yield of\nparticles. We present and discuss results for the multiplicity distributions,\nwhich agree well with the measured data from the CERN SPS, including those for\nK mesons. The transverse momentum distributions of the produced hadrons are\nalso found to be in good agreement with the preliminary data measured by the\nNA49 and the WA98 collaboration for the collision of lead nuclei at the CERN\nSPS. The analysis of the time evolution of transverse energy deposited in the\ncollision zone and the energy density suggests an existence of partonic matter\nfor a time of more than 5 fm.",
"arxiv_id": "nucl-th/9706002",
"authors": [
"Klaus Geiger",
"Dinesh Kumar Srivastava"
],
"categories": [
"nucl-th",
"hep-ex",
"hep-ph",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.56.2718",
"journal_ref": "Phys.Rev.C56:2718-2725,1997",
"title": "Parton cascade description of relativistic heavy-ion collisions at CERN SPS energies ?",
"url": "https://arxiv.org/abs/nucl-th/9706002"
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