dorsal/arxiv
View SchemaHow dense does parton matter get in Pb + Pb Collisions at the CERN SPS?
| Authors | Klaus Geiger, Berndt Mueller |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9707048 |
| URL | https://arxiv.org/abs/nucl-th/9707048 |
| DOI | 10.1007/BF03158345 |
| Journal | Heavy Ion Phys. 7 (1998) 207-214 |
Abstract
We examine the qualitative features of parton production through materialization in heavy-ion collisions within perturbative QCD, and estimate the magnitude of the resulting parton density created during the early stage of the collisions. The implications for ``anomalous'' $J/\psi$ suppression observed in Pb+Pb collisions at the CERN SPS are discussed. We argue that the A-dependence of absorption of $J/\psi$ by (partonic) comovers is steeper than assumed in most phenomenological models, because the absorption process is dominated by quasi-perturbative QCD interactions. Our argument is supported by results recently obtained in the framework of the parton cascade model. We predict significant ``anomalous'' suppression for Pb+Pb collisions at the CERN-SPS, but not for S+U collisions.
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"abstract": "We examine the qualitative features of parton production through\nmaterialization in heavy-ion collisions within perturbative QCD, and estimate\nthe magnitude of the resulting parton density created during the early stage of\nthe collisions. The implications for ``anomalous\u0027\u0027 $J/\\psi$ suppression\nobserved in Pb+Pb collisions at the CERN SPS are discussed. We argue that the\nA-dependence of absorption of $J/\\psi$ by (partonic) comovers is steeper than\nassumed in most phenomenological models, because the absorption process is\ndominated by quasi-perturbative QCD interactions. Our argument is supported by\nresults recently obtained in the framework of the parton cascade model. We\npredict significant ``anomalous\u0027\u0027 suppression for Pb+Pb collisions at the\nCERN-SPS, but not for S+U collisions.",
"arxiv_id": "nucl-th/9707048",
"authors": [
"Klaus Geiger",
"Berndt Mueller"
],
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"nucl-th",
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],
"doi": "10.1007/BF03158345",
"journal_ref": "Heavy Ion Phys. 7 (1998) 207-214",
"title": "How dense does parton matter get in Pb + Pb Collisions at the CERN SPS?",
"url": "https://arxiv.org/abs/nucl-th/9707048"
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