Elliptic flow and incomplete equilibration at RHIC

被引：178

作者：

Bhalerao, RS

Blaizot, JP

Borghini, N

Ollitrault, JY

机构：

[1] Tata Inst Fundamental Res, Dept Theoret Phys, Bombay 400005, Maharashtra, India

[2] ECT, I-38050 Trento, Italy

[3] CERN, Div Theory, Dept Phys, CH-1211 Geneva, Switzerland

[4] CEA, DSM, SPhT, Serv Phys Theor,Unite Rech Associee,CNRS, F-91191 Gif Sur Yvette, France

来源：

PHYSICS LETTERS B | 2005年 / 627卷

关键词：

D O I：

10.1016/j.physletb.2005.08.131

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We argue that RMC data, in particular those on the anisotropic flow coefficients v(2) and v(4), suggest that the matter produced in the early stages of nucleus-nucleus collisions is incompletely thermalized. We interpret the parameter (1/S)(dN/dy), where S is the transverse area of the collision zone and dN/dy the multiplicity density, as an indicator of the number of collisions per particle at the time when elliptic flow is established, and hence as a measure of the degree of equilibration. This number serves as a control parameter which can be varied experimentally by changing the system size, the centrality or the beam energy. We provide predictions for Cu-Cu collisions at RHIC as well as for Pb-Pb collisions at the LHC. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：49 / 54

页数：6

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