Charmonium dynamics in Au+Au collisions at sqrt(S)=200 GeV
Abstract
The formation and suppression dynamics of J/Psi, Chi_c and Psi-Prime mesons is studied within the HSD transport approach for Au+Au reactions at the top RHIC energy of sqrt(S)=200 GeV. Two prominent models, which have been discussed for more than a decade, are incorporated, i.e. the 'hadronic comover absorption and reformation' model as well as the 'QGP threshold' scenario, and compared to available experimental data. Our studies demonstrate that both scenarios - compatible with experimental observation at SPS energies - fail severely at RHIC energies. This combined analysis - together with the underestimation of charm elliptic flow - proves that the dynamics of c, c-bar quarks are dominated by partonic interactions in the strong QGP (sQGP) and can neither be modeled by 'hadronic' interactions nor described appropriately by color screening alone.
Keywords
Cite
@article{arxiv.0705.4443,
title = {Charmonium dynamics in Au+Au collisions at sqrt(S)=200 GeV},
author = {O. Linnyk and E. L. Bratkovskaya and W. Cassing and H. Stoecker},
journal= {arXiv preprint arXiv:0705.4443},
year = {2008}
}
Comments
4 pages, 2 figures