Multiplicity dependence of identical particle correlations in the quantum optical approach

TL;DR

This paper develops a quantum optical framework to analyze how identical particle correlations depend on multiplicity, incorporating chaotic and coherent fields, and applies it to experimental data from high-energy collider experiments.

Contribution

It introduces a diagrammatic approach for calculating multiplicity-dependent correlations in semi-inclusive events, extending previous models to include both chaotic and coherent fields.

Findings

The model successfully describes experimental multiplicity dependence of correlation functions.

It provides analytical expressions for multiplicity distribution and two-particle correlations.

Application to UA1 and OPAL data validates the approach.

Abstract

Identical particle correlations at fixed multiplicity are consideres in the presence of chaotic and coherent fields. The multiplicity distribution, one-particle momentum density, and two-particle correlation function are obtained based on the diagrammatic representation for cmulants in semi-inclusive events. Our formulation is applied to the analysis of the experimental data on the multiplicity dependence of correlation functions reported by the UA1 and the OPAL Collaborations.