Jet tomography of Au plus Au reactions including multi-gluon fluctuations

被引：165

作者：

Gyulassy, M

Levai, P

Vitev, I

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] KFKI Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

来源：

PHYSICS LETTERS B | 2002年 / 538卷 / 3-4期

基金：

匈牙利科学研究基金会; 美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(02)01990-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Jet tomography is the analysis of the attenuation pattern of high transverse momentum hadrons to determine certain line integral transforms of the density profile of the QCD matter produced in ultra-relativistic nuclear collisions. In this Letter, we calculate the distortion of jet tomography due to multi-gluon fluctuations within the GLV radiative energy loss formalism. We find that fluctuations of the average gluon number, <N-g> similar to 3 for RHIC initial conditions, reduce the attenuation of pions by approximately a factor Z approximate to 0.4-0.5. Therefore the plasma density inferred from jet tomography without fluctuations must be enhanced by a factor 1/Z similar to 2. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：282 / 288

页数：7

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