منابع مشابه
Charmonium Suppression in Nuclear Collisions
Has the quark gluon plasma been discovered at the CERN SPS? Experiment NA50 has reported an abrupt decrease in ψ production in Pb+Pb collisions at 158 GeV per nucleon [1]. Specifically, the collaboration presented a striking ‘threshold effect’ in the ψ–to–continuum ratio by plotting it as a function of a calculated quantity, the mean path length of the ψ through the nuclear medium, L, as shown ...
متن کاملMott Mechanism and Anomalous Charmonium Suppression
We investigate a scenario where conditions for Mott dissociation of charmonium are fulfilled locally in ultrarelativistic heavy ion collisions at the short time scales before hadronization and study possible consequences to be drawn from observation of “anomalous” thresholds in the J/ψ suppression pattern. We suggest that for a compilation of experiments with different kinematics, variables pre...
متن کاملCharmonium suppression in p A collisions
Since the suppression of J/ψ’s has been proposed by Matsui and Satz as a signal for a quark-gluon plasma formation more than a decade ago [1] a lot of experimental efforts have been devoted to use them for the quest of the formation of a quark gluon plasma created in ultra-relativistic heavy ion collisions. For small systems, where the creation of a plasma is not expected, the measured absorpti...
متن کاملCharmonium suppression from purely geometrical effects
The extend to which geometrical effects contribute to the production and suppression of the J/ψ and qq minijet pairs in general is investigated for high energy heavy ion collisions at SPS, RHIC and LHC energies. For the energy range under investigation, the geometrical effects referred to are shadowing and anti-shadowing, respectively. Due to those effects, the parton distributions in nuclei de...
متن کاملCharmonium Suppression by Comover Scattering in Pb+Pb Collisions
The first reports of ψ and ψ production from experiment NA50 at the CERN SPS are compared to predictions based on a hadronic model of charmonium suppression. Data on centrality dependence and total cross sections are in good accord with these predictions. This manuscript has been authored under contract number DE-AC02-76CH00016 with the U. S. Department of Energy. Accordingly, the U.S. Governme...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2000
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.61.054906