BOSONIC KINETICS AND THE PION TRANSVERSE-MOMENTUM IN HEAVY-ION COLLISIONS

被引：36

作者：

WELKE, GM

BERTSCH, GF

机构：

[1] National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing

来源：

PHYSICAL REVIEW C | 1992年 / 45卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.45.1403

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：

Using a new technique to solve the kinetic equation including Bose statistics, we show that the shape of the pion transverse momentum spectrum is sensitive to the hadronization time in ultrarelativistic heavy ion collisions. For a pure pion gas, the magnitude of the soft pion component observed in central 200 GeV/nucleon O + Au collisions is reproduced by an effective pionization time of about 7 fm/c. This explanation implies that the hadrons are produced out of chemical equilibrium.

引用

页码：1403 / 1405

页数：3

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