\alpha_S from LEP

TL;DR

This paper reports recent measurements of the strong coupling constant _S at LEP, using various methods including jet rates, decay analyses, and scaling violations, to refine understanding of quantum chromodynamics.

Contribution

It presents new experimental results on _S from LEP across multiple analysis techniques, enhancing precision in QCD parameter determination.

Findings

Consistent _S values across different methods.

Improved precision in _S measurements from LEP data.

Insights into QCD processes from diverse decay channels.

Abstract

Recent results on measurements of the strong coupling $\alpha_S$ from LEP are reported. These include analyses of the 4-jet rate using the Durham or Cambridge algorithm, of hadronic $Z^0$ decays with hard final state photon radiation, of scaling violations of the fragmentation function, of the longitudinal cross section, of the $Z^0$ lineshape and of hadronic $\tau$ lepton decays.