J/ψ production in Au plus Au collisions √sNN =200 GeV and the nuclear absorption

被引：4
|
作者：
Chaudhuri, A. K. [1 ]
机构：
[1] Inst Natl Rech Sci Energie Varennes, Kolkata 700064, W Bengal, India
来源：
PHYSICAL REVIEW C | 2006年 / 74卷 / 04期
关键词：
D O I：
10.1103/PhysRevC.74.044907
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
It is shown that a quantum chromodynamics-based nuclear absorption model, with few parameters fixed to reproduce experimental J/psi yield in 200 GeV proton-proton/proton-nucleon and 450 GeV proton-nucleon collisions, can explain the preliminary PHENIX data on the centrality dependence of J/psi suppression in Cu+Cu collisions at Relativistic Heavy Ion Collider (RHIC) energy, root s(NN)=200 GeV. However, the model does not give a satisfactory description for the preliminary PHENIX data on the centrality dependence of J/psi suppression in Au+Au collisions. The analysis suggests that in Au+Au collisions, J/psi are suppressed in a medium unlike the medium produced in CERN Super Proton Synchrotron energy nuclear collisions or in RHIC energy Cu+Cu collisions.
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页数：6
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