2003/09/12 by Matthias Jamin, Jamin, Matthias
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0309147
4 pages, 1 figure, contribution to CKM03, Durham, April 2003
arxiv created 2003/09/12 · openalex publication_date 2003/09/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Already in the past, hadronic tau decays have served as an interesting source to obtain information on the parameters of the Standard Model, like the strong coupling alphas or the strange quark mass. Below it will be shown that the approach to obtain the strange mass from the hadronic tau-decay width can be turned into a determination of the CKM matrix element Vus, once the strange mass is used as an input from other sources. At present, we obtain Vus = 0.2179 +- 0.0045, where the error is completely dominated by the experimental uncertainty, and can be improved through an improved measurement of the hadronic tau-decay rate into strange particles Rtau,S.