alpha_S Evolution from 35 GeV to 202 GeV and Flavour Independence

2000/05/26 by O. Biebel, Biebel, O.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · doi:10.48550/arxiv.hep-ex/0005040

openalex publication_date 2000/05/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Determinations of the strong coupling constant alpha_S at centre-of-mass energies of 192 through 202 GeV at LEP are presented. The energy evolution of alpha_S is in agreement with the prediction of QCD. The combined investigation of OPAL and JADE data in the energy range of 35 through 189 GeV yields alpha_S(m_Z)=0.1187^+0.0034_-0.0019. The strenght of the strong coupling is flavour independent if quark mass effects are taken into account.

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