J/ψ suppression and enhancement in Au plus Au collisions at the BNL RHIC

被引：31
作者：
Gorenstein, MI
Kostyuk, AP
Stöcker, H
Greiner, W
机构：
[1] Goethe Univ Frankfurt, Inst Theoret Phys, D-6000 Frankfurt, Germany
[2] Bogolyubov Inst Theoret Phys, Kiev, Ukraine
来源：
PHYSICS LETTERS B | 2002年 / 524卷 / 3-4期
关键词：
D O I：
10.1016/S0370-2693(01)01362-4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider J/psi production in heavy ion collisions at RHIC energies in the statistical coalescence model with exact (canonical ensemble) charm conservation. Charm quark-antiquark pairs are assumed to be created in primary hard parton collisions, but open and hidden charm particles are formed at the hadronization stage according to the laws of statistical mechanics. The dependence of the J/psi production on both the number of nucleon participants and the collision energy is studied. The model predicts J/psi suppression for low energies, whereas at the highest RHIC energy the model reveals J/psi enhancement. (C) 2002 Elsevier Science B.V. All rights reserved.
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收藏
页码：265 / 272
页数：8
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