Recent QCD Results from LEP-1 and LEP-2

TL;DR

This paper reviews recent Quantum Chromodynamics (QCD) results from LEP experiments, including measurements of the strong coupling constant, event shapes, and gluon jets, providing insights into fundamental strong interaction properties.

Contribution

It presents new experimental results from LEP-1 and LEP-2, testing QCD predictions such as flavor independence, hadronization corrections, and the running of the strong coupling constant.

Findings

Agreement with QCD predictions for strong coupling running

Evidence supporting flavor independence of the strong coupling

Validation of power law corrections for hadronization effects

Abstract

A summary is given of some recent QCD results from LEP. For LEP-2, the topics include event shape measurements, determinations of the strong coupling constant, and measurements of the charged particle multiplicity distribution at the recently completed run at 189 GeV. For LEP-1, the topics presented are a test of the flavor independence of the strong coupling constant and a study of gluon jets using a hemisphere definition to correspond to analytic calculations. For the combined LEP data samples, the topics include a test of power law corrections for hadronization effects and the running of the strong coupling strength.