TY  - INPR
A1  - Bratkovskaya, Elena L.
A1  - Kostyuk, Andriy P.
A1  - Cassing, Wolfgang
A1  - Stöcker, Horst
T1  - Charmonium chemistry in A+A collisions at relativistic energies
N2  - Charmonium production and suppression in heavy-ion collisions at relativistic energies is investigated within di erent models, i.e. the comover absorption model, the threshold suppression model, the statistical coalescence model and the HSD transport approach. In HSD the charmonium dissociation cross sections with mesons are described by a simple phase-space parametrization including an e ective coupling strength |Mi|2 for the charmonium states i =Xc,J/psi, psi'. This allows to include the backward channels for charmonium reproduction by DD channels which are missed in the comover absorption and threshold suppression model employing detailed balance without introducing any new parameters. It is found that all approaches yield a reasonable description of J/psi suppression in S+U and Pb+Pb collisions at SPS energies. However, they di er significantly in the psi'/J/psi ratio versus centrality at SPS and especially at RHIC energies. These pronounced differences can be exploited in future measurements at RHIC to distinguish the hadronic rescattering scenarios from quark coalescence close to the QGP phase boundary.
KW  - Charmonium
KW  - Kollisionen des schweren Ions
KW  - QGP
KW  - Charmonium
KW  - heavy-ion collisions
KW  - QGP
Y1  - 2005
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3337
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-20701
ER  -