Rapidity dependent momentum anisotropy at RHIC

被引：43

作者：

Heinz, U ^{[1
]}

Kolb, PF

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[2] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2004年 / 30卷 / 08期

关键词：

D O I：

10.1088/0954-3899/30/8/096

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：

In Au+Au collisions at RHIC, elliptic flow was found to rapidly decrease as a function of rapidity. We. argue that the origin of this phenomenon is incomplete thermalization of the initial fireball outside the mid-rapidity region and show that it can be quantitatively related to the analogous effect at mid-rapidity in peripheral collisions and in collisions at lower beam energies. We conclude that for Au+Au collisions ideal hydrodynamics only work if the initial average energy density exceeds 10 GeV fm(-3).

引用

页码：S1229 / S1233

页数：5

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