Are we close to an equilibrated quark-gluon plasma? Nonequilibrium analysis of particle production in ultrarelativistic heavy ion collisions

被引：34

作者：

Bass, SA ^{[1
]}

Belkacem, M ^{[1
]}

Brandstetter, M ^{[1
]}

Bleicher, M ^{[1
]}

Gerland, L ^{[1
]}

Konopka, J ^{[1
]}

Neise, L ^{[1
]}

Spieles, C ^{[1
]}

Soff, S ^{[1
]}

Weber, H ^{[1
]}

Stocker, H ^{[1
]}

Greiner, W ^{[1
]}

机构：

[1] Goethe Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.81.4092

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ratios of hadronic abundances are analyzed for pp and nucleus-nucleus collisions at root s approximate to 20 GeV using the microscopic ultrarelativistic quantum molecular dynamics transport model. Secondary interactions significantly change the primordial hadronic composition of the system. A strong dependence on rapidity is predicted. Without assuming thermal and chemical equilibrium, predicted hadron yields and ratios agree with many of the data (pi/p, d/p, (p) over bar/p, <(Lambda)over bar>/Lambda, <(Xi)over bar>/<(Lambda)over bar>, etc.). [S0031-9007(98)07647-9].

引用

页码：4092 / 4095

页数：4

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