Determining the strange quark mass in Cabibbo-suppressed τ lepton decays

1998/05/15 by K.G. Chetyrkin, K. G. Chetyrkin, J.H. Kühn +2 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0550-3213(98)00511-2

published as Nucl.Phys.B533:473-493,1998 · 26 pages, LaTeX, no figures

arxiv created 1998/05/15 · openalex publication_date 1998/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

In this work radiative corrections in the total hadronic decay rate of the tau-lepton and some moments of its differential distributions are studied employing perturbative QCD and the operator product expansion. We calculate quadratic quark mass corrections in the strange mass to the decay rate ratio R_tau to the order O(α_s³ m²) and find that they contribute appreciably to the Cabibbo suppressed decay modes of the tau-lepton. Using the results of a recent experimental analysis, we obtain m_s(1 GeV) = 200 ± 40_exp ± 30_th MeV.

Citations

• The strange quark mass from QCD sum rules
• Order-αs3 determination of the strange quark mass

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