Tau decay determination of the strange quark mass

Jul, 1999

Citations per year

19992003200720112015012345
Abstract:
The recent ALEPH measurements of the inclusive Cabibbo--suppressed decay width of the τ\tau and several moments of its invariant mass distribution are used to determine the value of the strange quark mass. We obtain, in the MSˉ\bar{\rm MS} scheme, ms(Mτ2)=(119±24)m_s(M_\tau^2) = (119\pm 24) MeV, which corresponds to ms(1GeV2)=(164±33)MeV,ms(4GeV2)=(114±23)MeV m_s(1 {\rm GeV}^2) = (164 \pm 33) {\rm MeV}, m_s(4 {\rm GeV}^2) = (114\pm 23) {\rm MeV} .
  • talk: Montpellier 1999/07/07
  • tau: semileptonic decay
  • decay: inclusive reaction
  • tau: width
  • quark: strangeness
  • mass: strangeness
  • two-point function
  • spectral representation
  • symmetry breaking: SU(3)
  • hadron: mass spectrum