How to extract physics from HBT radius parameters

Abstract

I review recent progress in the understanding of the connection between the space-time structure of the particle emitting source and the form of the two-particle correlation function in momentum space. Based on a new scheme for calculating the HBT radius parameters from the emission function, strategies are suggested to separate for rapidly expanding sources the information on the spatial and temporal structure of the source. To this end a new fitting function for the two-particle correlation function is proposed. Its usefulness is demonstrated for a typical expanding model source, and it is shown how the dependence of the resulting fit parameters on the momentum of the particle pair can be used to measure the longitudinal and transverse expansion of the source.

14 pages, 5 figures, LaTeX (qm96.sty included). Invited talk presented at Quark Matter 96, Heidelberg, 20.-24.5.96

References in corpus (5)

• A new cross term in the two-particle Hanbury-Brown-Twiss correlation function
• Model Independent Features of the Two-Particle Correlation Function
• HBT Correlators -- Current Formalism vs. Wigner Function Formulation
• Bose-Einstein Correlations for Expanding Finite Systems
• Lifetimes and Sizes from Two-Particle Correlation Functions

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