2001/08/07 by Stéphan Narison, Stephan Narison, Narison, Stephan
Physics and Astronomy · #Astrophysics (astro-ph) #Atomic physics #Condensed matter physics #Coupling (piping) #Electroweak interaction #FOS: Physical sciences #Fermi Gamma-ray Space Telescope #Hadron #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #High-Energy Particle Collisions Research #Hyperfine structure #Lepton #Materials science #Muonium #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #astro-ph #hep-ex #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.hep-ph/0108065
Some corrections and explanations added. 6 pages (latex file), 2 tables, 1 figure
openalex publication_date 2001/08/07 · arxiv created 2001/10/26 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a new independent evaluation of the hadronic and QCD contributions to the QED running coupling α(MZ) and to the muonium hyperfine splitting ν. We obtain: Δαhad=2770(17)10-5 and Δνhad=232.5(2.5) Hz. Combined with the QED and Electroweak Standard Model contributions, they lead to: α-1(MZ)=128.926(25) and to the Fermi energy splitting νF=4~459~031~783(229) Hz, where for the latter, we have used, in addition, the precise measurement of the muonium hyperfine splitting νexp. We use νF in order to predict the ratios of masses mμ/me=206.768~276(11) and of the magnetic moments μμ/μeB=4.841~970~47(25)10-3, which are in excellent agreement with the ones quoted by the Particle Data Group. These remarkable agreements can provide strong constraints on some contributions beyond the Standard Model.