Tau Decay Determination of the Strange Quark Mass

Abstract

The recent ALEPH measurements of the inclusive Cabibbo--suppressed decay width of the $\tau$ and several moments of its invariant mass distribution are used to determine the value of the strange quark mass. We obtain, in the $\overline{\mathrm{MS}}$ scheme, $m_s(M_{\tau }^2)=(119\pm 24)$ MeV, which corresponds to $m_s(1{\mathrm{GeV}}^2)=(164\pm 33)\mathrm{MeV},m_s(4{\mathrm{GeV}}^2)=(114\pm 23)\mathrm{MeV}$.

5pages. Invited talk at QCD'99 (Montpellier, July 1999)

References in corpus (4)

• Perturbative Quark Mass Corrections to the Tau Hadronic Width
• Tau Physics
• Strange Quark Mass Dependence of the Tau Hadronic Width
• Vector and Axial-Vector Spectral Functions and QCD

Cited by in corpus (13)

• The Physics of Hadronic Tau Decays
• V_us and m_s from hadronic tau decays
• Determination of m_s and |V_us| from hadronic tau decays
• Spectral distribution for the decay tau -> nu_tau K pi
• K pi vector form factor, dispersive constraints and tau -> nu_tau K pi decays
• Relativistic nuclear model with point-couplings constrained by QCD and chiral symmetry
• What can be learned from the Belle spectrum for the decay tau- -> nu_tau K_S pi-
• Determination of the Chiral Couplings L_10 and C_87 from Semileptonic Tau Decays
• Violation of Quark-Hadron Duality and Spectral Chiral Moments in QCD
• Contour-improved versus fixed-order perturbation theory in hadronic tau decays
• Optimal renormalization and the extraction of the strange quark mass from moments of the $\tau$-decay spectral function
• Nuclear Energy Density Functionals Constrained by Low-Energy QCD
• From hadronic tau decays to the chiral couplings L_10 and C_87