1993/11/05 by Gunnar Bali, Gunnar S. Bali, Bali, Gunnar S.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.48550/arxiv.hep-lat/9311009
Wuppertal preprint WUB 93-37, 22 pages + 8 figures, LaTeX with epsf-postscript figures (ca. 350 MB)
arxiv created 1993/11/05 · openalex publication_date 1993/11/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A recent lattice calculation of the QCD running coupling is presented. The coupling is extracted from the force between two static quarks in the framework of the valence quark approximation. A value of the Lambda-parameter for zero quark flavours is determined: Lambdamsbar=0.630(38)√σ =293(18)+25-63 MeV. The first error is statistical, the second stems from the overall scale uncertainty in the string tension sigma. Combining this value with results from full QCD lattice simulations, we end up with the estimate Λ(4)_MS=129(8)+43-60~MeV or α_MS(mZ)=0.102+06-11.