Lifetimes and Sizes from Two-Particle Correlation Functions
Nuclear Theory
2009-10-09 v2 High Energy Physics - Phenomenology
Abstract
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.
Cite
@article{arxiv.nucl-th/9603011,
title = {Lifetimes and Sizes from Two-Particle Correlation Functions},
author = {U. Heinz and B. Tomasik and U. A. Wiedemann and Y. -F. Wu},
journal= {arXiv preprint arXiv:nucl-th/9603011},
year = {2009}
}
Comments
15 pages REVTEX, 2 figures included, submitted to Phys. Lett. B, Expanded discussion of disadvantages of standard HBT fit and of Fig. 2