dorsal/arxiv
View SchemaCharmonium production from the hadronic phase
| Authors | C. M. Ko, X. N. Wang, X. F. Zhang |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9808032 |
| URL | https://arxiv.org/abs/nucl-th/9808032 |
| DOI | 10.1016/S0370-2693(98)01390-2 |
| Journal | Phys.Lett. B444 (1998) 237-244 |
Abstract
Charmonium production from the hadron gas formed in ultra-relativistic heavy-ion collisions is studied. Using the $J/\psi$-hadron absorption cross section determined from the nonperturbative quark-exchange model, which has a peak value similar to that used in the comover model for $J/\psi$ suppression and a thermally averaged value consistent from that extracted from $J/\psi$ data in heavy-ion collisions, we find that $J/\psi$ production from the hadron gas is negligible in heavy-ion collisions at RHIC energies but is important at LHC energies as a result of the large number of charm mesons produced at higher energy collisions. The number of $J/\psi$ produced from these secondary collisions at LHC may be comparable to that of primary $J/\psi$'s, which are expected to be dissociated in the quark-gluon plasma created in the collisions, leading thus to a possible absence of $J/\psi$ suppression. Similar results are obtained for $\psi^\prime$ production in ultra-relativistic heavy-ion collisions.
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"abstract": "Charmonium production from the hadron gas formed in ultra-relativistic\nheavy-ion collisions is studied. Using the $J/\\psi$-hadron absorption cross\nsection determined from the nonperturbative quark-exchange model, which has a\npeak value similar to that used in the comover model for $J/\\psi$ suppression\nand a thermally averaged value consistent from that extracted from $J/\\psi$\ndata in heavy-ion collisions, we find that $J/\\psi$ production from the hadron\ngas is negligible in heavy-ion collisions at RHIC energies but is important at\nLHC energies as a result of the large number of charm mesons produced at higher\nenergy collisions. The number of $J/\\psi$ produced from these secondary\ncollisions at LHC may be comparable to that of primary $J/\\psi$\u0027s, which are\nexpected to be dissociated in the quark-gluon plasma created in the collisions,\nleading thus to a possible absence of $J/\\psi$ suppression. Similar results are\nobtained for $\\psi^\\prime$ production in ultra-relativistic heavy-ion\ncollisions.",
"arxiv_id": "nucl-th/9808032",
"authors": [
"C. M. Ko",
"X. N. Wang",
"X. F. Zhang"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0370-2693(98)01390-2",
"journal_ref": "Phys.Lett. B444 (1998) 237-244",
"title": "Charmonium production from the hadronic phase",
"url": "https://arxiv.org/abs/nucl-th/9808032"
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