Energy and centrality dependence of rapidity densities at RHIC energies

被引：125
|
作者：
Wang, XN
Gyulassy, M
机构：
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA
[2] Columbia Univ, Dept Phys, New York, NY 10027 USA
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 16期
关键词：
D O I：
10.1103/PhysRevLett.86.3496
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The energy and centrality dependence of the charged multiplicity per participant nucleon is shown to he able to differentiate between final state saturation and fixed scale perturbative QCD models of initial entropy production in high-energy heavy-ion collisions. The energy dependence is shown to test the nuclear enhancement of the minijet component of the initial conditions, while the centrality dependence provides a key test of whether gluon saturation is reached at RHIC energies. The HIJING model predicts that the rapidity density per participant increases with centrality while the saturation model prediction is essentially independent of centrality.
引用
收藏
页码：3496 / 3499
页数：4
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