STRANGENESS CONSERVATION IN HOT NUCLEAR FIREBALLS

被引：121

作者：

LETESSIER, J

TOUNSI, A

HEINZ, U

SOLLFRANK, J

RAFELSKI, J

机构：

[1] UNIV REGENSBURG,INST THEORET PHYS,D-93040 REGENSBURG,GERMANY

[2] UNIV ARIZONA,DEPT PHYS,TUCSON,AZ 85721

来源：

PHYSICAL REVIEW D | 1995年 / 51卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.51.3408

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Within a thermal model generalized to allow for nonequilibrium strange particle abundances we study how the constraint that the balance of strangeness in a fireball is (nearly) zero impacts the allowable thermal fireball parameters. Using the latest data of the CERN-WA85 experiment for the case of 200A GeV S-A (A∼200) collisions we extract the values of the thermal parameters considering in detail the impact of hadronic resonance decays on the abundances and spectral form of strange baryons and antibaryons. Given these results and invoking further the observed charged particle multiplicities we are able to consider the (specific) entropy content of the fireball in order to understand the nature of the disagreement of the hadronic gas picture of the fireball with the experimental data. © 1995 The American Physical Society.

引用

页码：3408 / 3435

页数：28

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