Universal pion freeze-out phase-space density

被引：55

作者：

Ferenc, D ^{[1
]}

Heinz, U

Tomásik, B

Wiedemann, UA

Cramer, JG

机构：

[1] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[2] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[3] Columbia Univ, Dept Phys, New York, NY 10027 USA

[4] Univ Washington, Nucl Phys Lab, Seattle, WA 98195 USA

来源：

PHYSICS LETTERS B | 1999年 / 457卷 / 04期

关键词：

D O I：

10.1016/S0370-2693(99)00481-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Results on the pion phase-space density at freeze-out in sulphur-nucleus, Pb-Pb and pi-p collisions at the CERN SPS are presented. All heavy-ion reactions are consistent with the thermal Bose-Einstein distribution f = [exp( E/T) - 1](-1) at T similar to 120 MeV, modified for radial expansion. pi-p data are also consistent with f, but at T similar to 180 MeV and without radial flow. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：347 / 352

页数：6

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