Strange Quark Mass Determination from Cabibbo–Suppressed Tau Decays
نویسندگان
چکیده
We present a general analysis of SU(3) breaking effects in the semi-inclusive tau hadronic width. The recent ALEPH measurements of the inclusive Cabibbo–suppressed decay width of the τ and several moments of its invariant mass distribution are used to determine the value of the strange quark mass. We obtain, in the MS scheme, ms(M 2 τ ) = (119± 24) MeV to O(α 3 s), which corresponds to ms(1GeV ) = (164± 33) MeV, ms(4GeV ) = (114± 23) MeV.
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