ON THE MEAN FREE PATHS OF PIONS AND KAONS IN HOT HADRONIC MATTER

被引：23

作者：

HAGLIN, K ^{[1
]}

PRATT, S ^{[1
]}

机构：

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

来源：

PHYSICS LETTERS B | 1994年 / 328卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(94)91475-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Pion and kaon mean free paths within a thermal hadronic background are calculated using relativistic kinetic theory. Free cross sections are used which include contributions from rho, K*, DELTA and heavier resonances. Given pion to baryon ratios appropriate for the breakup stage of a 200 . A GeV relativistic-heavy-ion collision, we find for temperatures less than 100 MeV, kaons have a shorter mean free path than pions, while for higher breakup temperatures the reverse is true. Since breakup temperatures should be in the neighborhood of 100 MeV, this suggests that kaon interferometry samples the same emission distribution as pion interferometry.

引用

页码：255 / 258

页数：4

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