Multiplicity, Jet, and Transverse Mass dependence of Bose-Einstein Correlations in e$^{+}$e$^{-}$- Annihilation

TL;DR

This paper investigates how Bose-Einstein correlations among identical pions vary with event multiplicity, jet count, and transverse momentum in electron-positron annihilation, using a tau-model parametrization.

Contribution

It introduces a detailed analysis of Bose-Einstein correlations in Z decays considering jet structure and multiplicity, applying a tau-model based parametrization.

Findings

Correlation strength varies with multiplicity and jet number.

Transverse momentum influences the correlation function.

The tau-model effectively describes the observed dependencies.

Abstract

Bose-Einstein correlations of pairs of identical charged pions produced in hadronic Z decays are analyzed for both two- and three-jet events. A parametrization suggested by the tau-model is used to investigate the dependence of the Bose-Einstein correlation function on track multiplicity, number of jets, and transverse momentum.