Particle production in p-p collisions at √s=17 GeV within a statistical model

被引：9

作者：

Kraus, I. ^{[1
]}

Cleymans, J. ^{[1
,2
,3
]}

Oeschler, H. ^{[1
]}

Redlich, K. ^{[4
,5
]}

机构：

[1] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[2] Univ Cape Town, UCT CERN Res Ctr, ZA-7701 Rondebosch, South Africa

[3] Univ Cape Town, Dept Phys, ZA-7701 Rondebosch, South Africa

[4] Univ Wroclaw, Inst Theoret Phys, PL-45204 Wroclaw, Poland

[5] GSI Hemholtzzentrum Schwerionenforsch, EMMI, D-64291 Darmstadt, Germany

来源：

PHYSICAL REVIEW C | 2010年 / 81卷 / 02期

关键词：

THERMAL HADRON-PRODUCTION; HEAVY-ION COLLISIONS; CHEMICAL EQUILIBRATION; STRANGENESS;

D O I：

10.1103/PhysRevC.81.024903

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：

A thermal-model analysis of particle production of p-p collisions at root s = 17 GeV using the latest available data is presented. The sensitivity of model parameters on data selections and model assumptions is studied. The system-size dependence of thermal parameters and recent differences in the statistical model analysis of p-p collisions at the super proton synchrotron are discussed. It is shown that the chemical freeze-out temperature and strangeness undersaturation factor depend strongly on kaon yields, which, at present, are still not well known experimentally. Excluding the phi meson and using data that are in agreement with the overall trend, it is rather unlikely that the chemical decoupling temperature in p-p collisions exceeds significantly that extracted from central heavy-ion collisions.

引用

页数：6

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