Inhomogeneities in the freeze-out of relativistic heavy-ion collisions

被引：0
|
作者：
Zschiesche, Detlef [1 ]
Portugal, Licinio [1 ]
机构：
[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, Brazil
来源：
BRAZILIAN JOURNAL OF PHYSICS | 2007年 / 37卷 / 2C期
关键词：
particle abundaces in heavy ion collisions; inhomogeneous chemical freeze-out; local and global strangeness neutrality;
D O I：
10.1590/S0103-97332007000500011
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An inhomogeneous decoupling surface of hadrons produced in relativistic heavy-ion collisions may occur, if the expanding hot and dense matter passes through a first order phase transition. We show that due to the non-linear dependence of the particle densities on the temperature and baryon-chemical potential such inhomogeneities should be visible even in the integrated, inclusive abundances. We analyze experimental data from Pb+Pb collisions at CERN-SPS and Au+Au collisions at BNL-RHIC to determine the amplitude of inhomogeneities and the role of local and global strangeness neutrality.
引用
收藏
页码：720 / 722
页数：3
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