Hadronic final state interactions at ALEPH and OPAL

TL;DR

This paper presents studies of hadronic final state interactions, including Fermi-Dirac and Bose-Einstein correlations, and colour reconnection effects in W-pair decays at LEP by ALEPH and OPAL collaborations.

Contribution

It provides new experimental analyses of particle correlations and colour reconnection effects in W-pair decays at LEP, enhancing understanding of hadronic final state interactions.

Findings

Observation of Fermi-Dirac correlations in Lambda pairs

Analysis of Bose-Einstein correlations in W decays

Insights into colour reconnection phenomena

Abstract

The studies of Fermi-Dirac correlations of $\Lambda\Lambda$ and $\bar{\Lambda}\bar{\Lambda}$ pairs in hadronic $\mathrm{Z}$ decays, Bose-Einstein correlations and colour reconnection in $\mathrm{W}$-pairs decays performed by the ALEPH collaboration in $\mathrm{e^+e^-}$ annihilation at LEP are presented. The OPAL analysis of Bose-Einstein correlations in $\mathrm{W}$-pair decays is also discussed.