PION PION CROSS-SECTION IN A DENSE AND HOT PIONIC GAS

被引：23

作者：

BARZ, HW

BERTSCH, G

DANIELEWICZ, P

SCHULZ, H

机构：

[1] MICHIGAN STATE UNIV,NATL SUPERCONDUCTING CYCLOTRON LAB,E LANSING,MI 48824

[2] MICHIGAN STATE UNIV,DEPT PHYS & ASTRON,E LANSING,MI 48824

来源：

PHYSICS LETTERS B | 1992年 / 275卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(92)90844-T

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We examine the in-medium scattering cross section in a dense and hot pionic gas. We show that the increase of the scattering rate associated with the Bose occupancy factors is largely compensated by a drop in the cross section, when medium effects on the pionic cross section are consistently taken into account. Implications for calculating the pion spectrum at low transverse momentum, in ultrarelativistic heavy ion collisions, are discussed.

引用

页码：19 / 23

页数：5

共 15 条

[1]

BARZ HW, 1991, IN PRESS MYA THEOR W

[2]

BERTSCH G, 1988, PHYS REV D, V37, P1302

[3] 2-BODY COLLISIONS AND MEAN-FIELD THEORY - THE BRUECKNER-BOLTZMANN EQUATION [J].