NONZERO CHEMICAL-POTENTIAL AND THE SHAPE OF THE PT-DISTRIBUTION OF HADRONS IN HEAVY-ION COLLISIONS

被引：108

作者：

KATAJA, M

RUUSKANEN, PV

机构：

[1] Department of Physics, University of Jyväskylä, SF-40100 Jyväskylä

来源：

PHYSICS LETTERS B | 1990年 / 243卷 / 03期

关键词：

D O I：

10.1016/0370-2693(90)90836-U

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The pT-spectra of negative particles from 200 GeV/nucleon O + Au and S + S collisions, measured at CERN by the NA35 collaboration, are fitted by a thermal distribution of massive pions which are strongly out of chemcial equilibrium. Both sets of data are consistent with the same values of temperature and chemical potential, T ≈ 165 MeV and μ ≈ 120 MeV. The low pT behaviour of the measured spectra seems to indicate that the transverse flow in these collisions is not strong. © 1990.

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页码：181 / 184

页数：4

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