Perturbative Quark Mass Corrections to the Tau Hadronic Width
نویسندگان
چکیده
The perturbative quark–mass corrections to the τ hadronic width are analysed to O(αsm 2 q), using the presently available theoretical information. The behaviour of the perturbative series is investigated in order to assess the associated uncertainties. The implications for the determination of the strange quark mass from τ decay data are discussed.
منابع مشابه
Strange Quark Mass Dependence of the Tau Hadronic Width 1 Joaquim Prades
The perturbative quark mass corrections to the tau hadronic width are studied to O(αs mq). Including up to dimension four corrections, we get ms(4GeV) = (143±42) MeV [ms(1GeV) = (193±59) MeV ]. Possible improvements to reduce the theoretical uncertainty are pointed out. September 1998 Invited talk at “High Energy Conference on Quantum Chromodynamics (QCD ’98)”, 2-8 July 1998, Montpellier. Work ...
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