Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-03-12
Phys.Lett.B523:60-66,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages ReVTeX, including 4 eps-figures; Revised version accepted for publication in Phys. Lett. B
Scientific paper
10.1016/S0370-2693(01)01311-9
The production of $J/\Psi$ mesons in central collisions of heavy nuclei is investigated as a function of collision energy. Two contributions are considered simultaneously: early (hard) production coupled with subsequent suppression in a Quark-Gluon Plasma, as well as thermal recombination of primordially produced $c$ and $\bar c$ quarks at the hadronization transition. Whereas the former still constitutes the major fraction of the observed $J/\Psi$ abundance at SpS energies, the latter dominates the yield at RHIC. The resulting excitation function for the number of $J/\Psi$'s over open charm pairs exhibits nontrivial structure around $\sqrt{s} \simeq 30$ AGeV, evolving into a significant rise towards maximal RHIC energy. We study this feature within different (thermal) scenarios for $J/\Psi$ suppression, including parton-induced quasifree destruction as a novel mechanism.
Grandchamp L.
Rapp Ralf
No associations
LandOfFree
Thermal versus Direct $J/Ψ$ Production in Ultrarelativistic Heavy-Ion Collisions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermal versus Direct $J/Ψ$ Production in Ultrarelativistic Heavy-Ion Collisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal versus Direct $J/Ψ$ Production in Ultrarelativistic Heavy-Ion Collisions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-401598