Kinetic freeze-out and radial flow in 11.6 A GeV Au+Au collisions

被引：24

作者：

Dobler, H ^{[1
]}

Sollfrank, J

Heinz, U

机构：

[1] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[2] CERN, Div Theoret Phys, CH-1211 Geneva 23, Switzerland

来源：

PHYSICS LETTERS B | 1999年 / 457卷 / 04期

关键词：

D O I：

10.1016/S0370-2693(99)00551-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the kinetic freeze-out conditions of hadrons in Au + Au collisions at 11.6 A GeV/c using different parametrizations of an expanding thermal fireball. We take into account the available double differential momentum spectra of a variety of particle species, covering a large fraction of the total momentum space. The overall fit to the data is very good and indicates a relatively low kinetic freeze-out temperature of about 90 MeV with an average transverse expansion velocity at midrapidity of about 0.5 c. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：353 / 358

页数：6

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