Lifetimes and sizes from two-particle correlation functions

被引：55

作者：

Heinz, U

Tomasik, B

Wiedemann, UA

Wu, YF

机构：

[1] Inst. für Theoretische Physik, Universität Regensburg

[2] Institute of Particle Physics, Hua-Zhong Normal University, Wuhan

来源：

PHYSICS LETTERS B | 1996年 / 382卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/0370-2693(96)00657-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the Yano-Koonin-Podgoretskii (YKP) parametrization of the two-particle correlation function for azimuthally symmetric expanding sources. We derive model-independent expressions for the YKP fit parameters and discuss their physical interpretation. We use them to evaluate the YKP fit parameters and their momentum dependence for a simple model for the emission function and propose new strategies for extracting the source lifetime. Longitudinal expansion of the source can be seen directly in the rapidity dependence of the Yano-Koonin velocity.

引用

页码：181 / 188

页数：8