Reconstruction of hadronization stage in Pb plus Pb collisions at 158 A GeV/c

被引：44

作者：

Akkelin, SV

Braun-Munzinger, P

Sinyukov, YM

机构：

[1] Bogolyubov Inst Theoret Phys, UA-03143 Kiev, Ukraine

[2] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany

来源：

NUCLEAR PHYSICS A | 2002年 / 710卷 / 3-4期

关键词：

relativistic heavy ion collisions; hadronization; chemical freeze-out; kinetic (thermal) freeze-out; hydrodynamic evolution; hadron resonance gas; quark-gluon plasma; inclusive spectra; HBT correlations;

D O I：

10.1016/S0375-9474(02)01165-X

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Recent data on hadron multiplicities in central Pb + Pb collisions at 158 A GeV/c at midrapidity are analyzed within the concept of chemical freeze-out. A non-uniformity of the baryon chemical potential along the beam axis is taken into account. An approximate analytical solution of the hydrodynamic equations for a chemically frozen Boltzmann-like gas is found. The Cauchy conditions for hydrodynamic evolution of the hadron resonance gas are fixed at the thermal freezeout hypersurface from analysis of one-particle momentum spectra and HBT correlations. The proper time of chemical freeze-out and physical conditions at the hadronization stage, such as energy density and averaged transverse velocity, are found. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：439 / 465

页数：27

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