THE RHO-PEAK IN THE DIMUON SPECTRUM AS A CLOCK FOR FIREBALL LIFETIMES IN RELATIVISTIC NUCLEAR COLLISIONS

被引：44

作者：

HEINZ, U ^{[1
]}

LEE, KS ^{[1
]}

机构：

[1] CHONNAM NATL UNIV,DEPT PHYS,KWANGJU 500,SOUTH KOREA

来源：

PHYSICS LETTERS B | 1991年 / 259卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(91)90152-G

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the modification of the dilepton yield from vector mesons inside a nuclear fireball. We argue that the relative magnitude of the rho-peak in the dilepton spectrum determines the lifetime of the hadron gas phase in nuclear collisions with an accuracy of about 1 fm/c. We also find that the phi/(omega + rho) ratio measured in the dimuon channel in 200 A GeV O + U and S + U collisions points towards a rather short-lived hadronic phase in these collisions.

引用

页码：162 / 168

页数：7