dorsal/arxiv
View SchemaParton Cascade Description of Heavy-Ion Collisions at CERN ?
| Authors | Klaus Geiger |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9801007 |
| URL | https://arxiv.org/abs/nucl-th/9801007 |
| DOI | 10.1016/S0375-9474(98)00377-7 |
| Journal | Czech.J.Phys. 48S1 (1998) 37-49; Nucl.Phys. A638 (1998) 551c-554c |
Abstract
There seems to be a general consensus now that a first glimpse of a QGP-like effect has become visible in the beautiful NA50 data on J/\psi production and the `anomalous supression' phenomenon. On the other hand, it is still widely believed that the dynamics of heavy-ion collisions at CERN SPS energy is predominantly governed by soft, non-perturbative physics. This is ironic: after all, it is unlikely that a QGP could be formed if the underlying dynamics were essentyially soft, rather than that it requires intense quark-gluon production with sufficient cascade-like reinteractions which drive the matter to large density and equilibrium. Therefore, I advocate in this contribution that for ultra-relativistic nucleus-nucleus collisions a description based on the pQCD interactions and cascade evolution of involved partons can and should be used, owing to the claim that short-range parton interactions play an important role at sufficiently high beam energies, including CERN energy sqrt(s) = 20 A GeV. Here mini-jet production which liberates of quarks and gluons cannot be considered as an isolated rare phenomenon, but can occur quite copiously and may lead to complex multiple cascade-type processes.
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"abstract": "There seems to be a general consensus now that a first glimpse of a QGP-like\neffect has become visible in the beautiful NA50 data on J/\\psi production and\nthe `anomalous supression\u0027 phenomenon. On the other hand, it is still widely\nbelieved that the dynamics of heavy-ion collisions at CERN SPS energy is\npredominantly governed by soft, non-perturbative physics. This is ironic: after\nall, it is unlikely that a QGP could be formed if the underlying dynamics were\nessentyially soft, rather than that it requires intense quark-gluon production\nwith sufficient cascade-like reinteractions which drive the matter to large\ndensity and equilibrium. Therefore, I advocate in this contribution that for\nultra-relativistic nucleus-nucleus collisions a description based on the pQCD\ninteractions and cascade evolution of involved partons can and should be used,\nowing to the claim that short-range parton interactions play an important role\nat sufficiently high beam energies, including CERN energy sqrt(s) = 20 A GeV.\nHere mini-jet production which liberates of quarks and gluons cannot be\nconsidered as an isolated rare phenomenon, but can occur quite copiously and\nmay lead to complex multiple cascade-type processes.",
"arxiv_id": "nucl-th/9801007",
"authors": [
"Klaus Geiger"
],
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"doi": "10.1016/S0375-9474(98)00377-7",
"journal_ref": "Czech.J.Phys. 48S1 (1998) 37-49; Nucl.Phys. A638 (1998) 551c-554c",
"title": "Parton Cascade Description of Heavy-Ion Collisions at CERN ?",
"url": "https://arxiv.org/abs/nucl-th/9801007"
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