Importance of granular structure in the initial conditions for the elliptic flow

被引：93

作者：

Andrade, R. P. G. ^{[1
]}

Grassi, F. ^{[1
]}

Hama, Y. ^{[1
]}

Kodama, T. ^{[2
]}

Qian, W. L. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Fis, BR-08315970 Sao Paulo, Brazil

[2] Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1103/PhysRevLett.101.112301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show the effects of the granular structure of the initial conditions of a hydrodynamic description of high-energy nucleus-nucleus collisions on some observables, especially on the elliptic-flow parameter upsilon(2). Such a structure enhances production of isotropically distributed high-p(T) particles, making upsilon(2) smaller there. Also, it reduces upsilon(2) in the forward and backward regions where the global matter density is smaller and, therefore, where such effects become more efficacious.

引用

页数：4

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