Strange Quark Mass Dependence of the Tau Hadronic Width

Abstract

The perturbative quark mass corrections to the tau hadronic width are studied to O(alpha_s^3 m_q^2). Including up to dimension four corrections, we get m_s(4 GeV^2)=(143 \pm 42) MeV [m_s(1 GeV^2)=(193 \pm 59) MeV ]. Possible improvements to reduce the theoretical uncertainty are pointed out.

Invited talk at High Energy Conference on Quantum Chromodynamics QCD'98, 2-8 July 1998, Montpellier (France). LaTeX, 8 pages with 3 ps figures

References in corpus (3)

• Perturbative Quark Mass Corrections to the Tau Hadronic Width
• On the QCD Sum Rule Determination of the Strange Quark Mass
• The strange-quark mass from QCD sum rules in the pseudoscalar channel

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• V_us and m_s from hadronic tau decays
• Determination of m_s and |V_us| from hadronic tau decays
• Strange-quark mass from combined e+e- and tau-decay data:test of the isospin symmetry and implications on epsilon'/εand m_{u,d}
• Spectral distribution for the decay tau -> nu_tau K pi
• Standard Model Confronting New Results for epsilon'/epsilon
• K pi vector form factor, dispersive constraints and tau -> nu_tau K pi decays
• 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
• Effects of Large CP Phases on the Proton Lifetime in Supersymmetric Unification
• Strange Quark, Tachyonic Gluon Masses and V_{us} from Hadronic Tau Decays
• Tau Decay Determination of the Strange Quark Mass
• Joint Extraction of m_s and V_us from Hadronic Tau Decays
• From hadronic tau decays to the chiral couplings L_10 and C_87