Particle production in 158•A GeV208Pb+208Pb collisions

被引：0
|
作者：
Awes, TC [1 ]
机构：
[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
来源：
ADVANCES IN NUCLEAR DYNAMICS 5 | 1999年
关键词：
quark gluon plasma; heavy-ion collisions; neutral pions; particle production; nuclear dependence; thermalization; freeze-out;
D O I：
暂无
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：
The production of neutral pions in 158.A GeV Pb-208+Pb-208 collisions has been studied in the WA98 experiment. The centrality dependence of the neutral pion production is investigated. An invariance of the spectral shape and a simple scaling of the yield with the number of participating nucleons is observed for centralities with more than about 50 participants. The transverse mass spectrum is analyzed in terms of a thermal model with hydrodynamic expansion. The high accuracy and large kinematic coverage of the measurement constrains the extracted freeze-out parameters, and provides information on the freeze-out velocity profile.
引用
收藏
页码：21 / 32
页数：12
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