dorsal/arxiv
View Schema$J/\Psi$ suppression in nuclear collisions at SPS energies
| Authors | W. Cassing, C. M. Ko |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9609025 |
| URL | https://arxiv.org/abs/nucl-th/9609025 |
| DOI | 10.1016/S0370-2693(97)00115-9 |
| Journal | Phys.Lett. B396 (1997) 39-44 |
Abstract
We have carried out a first calculation of $J/\Psi$ production from nuclear collisions within the covariant transport approach HSD, which has been very successful in describing both hadronic and electromagnetic observables from heavy-ion collisions at intermediate and high energies. The production of $J/\Psi$'s is based on the Lund string fragmentation model, while its interactions with hadrons are included by conventional cascade-type two-body collisions. Adopting 6 mb for the $J/\Psi$-baryon cross sections and 3 mb for the $J/\Psi$-meson cross sections above the $D\bar{D}$ threshold, we find that data on $J/\Psi$ suppression from both proton-nucleus and nucleus-nucleus collisions (including Pb + Pb) can be explained without assuming the formation of a quark-gluon plasma in these collisions. Our microscopic studies thus confirm the suggestion of Gavin et al. that $J/\Psi$ suppression observed in nuclear collisions is largely due to absorption by comovers, i.e., the produced mesons.
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"abstract": "We have carried out a first calculation of $J/\\Psi$ production from nuclear\ncollisions within the covariant transport approach HSD, which has been very\nsuccessful in describing both hadronic and electromagnetic observables from\nheavy-ion collisions at intermediate and high energies. The production of\n$J/\\Psi$\u0027s is based on the Lund string fragmentation model, while its\ninteractions with hadrons are included by conventional cascade-type two-body\ncollisions. Adopting 6 mb for the $J/\\Psi$-baryon cross sections and 3 mb for\nthe $J/\\Psi$-meson cross sections above the $D\\bar{D}$ threshold, we find that\ndata on $J/\\Psi$ suppression from both proton-nucleus and nucleus-nucleus\ncollisions (including Pb + Pb) can be explained without assuming the formation\nof a quark-gluon plasma in these collisions. Our microscopic studies thus\nconfirm the suggestion of Gavin et al. that $J/\\Psi$ suppression observed in\nnuclear collisions is largely due to absorption by comovers, i.e., the produced\nmesons.",
"arxiv_id": "nucl-th/9609025",
"authors": [
"W. Cassing",
"C. M. Ko"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0370-2693(97)00115-9",
"journal_ref": "Phys.Lett. B396 (1997) 39-44",
"title": "$J/\\Psi$ suppression in nuclear collisions at SPS energies",
"url": "https://arxiv.org/abs/nucl-th/9609025"
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