QCD Predictions for the Tau Hadronic Width: Determination of alpha_s(M_τ^2)

Abstract

The total $\tau$ hadronic width can be accurately calculated using analyticity and the operator product expansion. The theoretical analysis of this observable is updated to include all available perturbative and non-perturbative corrections. The experimental determination of ${\alpha }_s(M_{\tau }^2)$ and its actual uncertainties are discussed.

15 pages, LaTex: uses epsfig, twoside, fleqn, espcrc2 (included at end, find % CUT HERE %), 1 figure (included in separate uu file). Proc. QCD94

References in corpus (8)

• QCD Matching Conditions at Thresholds
• Instanton contributions to the $\tau$ decay widths
• A Measurement of the Branching Fraction $\mathcal{B}{\tau }^{+}\to h^{-}{\pi }^0{\nu }_{\tau }$
• Measurement of Cabibbo Suppressed Decays of the $\tau$ Lepton
• Renormalization of 4-Quark Operators and QCD-Sum Rules
• Small-Size Instanton Corrections to the $\tau$ Hadronic Width
• Alpha_s from Tau Decays
• QCD and Jet Physics

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• The $B_K$ Parameter in the $1/N_c$ Expansion
• Determination of the Chiral Couplings L_10 and C_87 from Semileptonic Tau Decays
• Measurement of the Strange Spectral Function in Hadronic tau Decays
• Violation of Quark-Hadron Duality and Spectral Chiral Moments in QCD
• Problems With Extracting $m_s$ from Flavor Breaking in Hadronic $\tau$ Decays
• Determining the beta-function of the strong interaction and closing the light gluino window
• Tau Physics: Theory Overview
• V_us From Hadronin Tau Decays
• QCD Description of Hadronic Tau Decays
• V_us From Hadronic Tau Decays
• Light Gluino Contribution in Hadronic Decays of Z boson and tau lepton to O(alpha_s^3)
• Tau Physics: Theoretical Perspective
• QCD spectral sum rules and spontaneously broken chiral symmetry
• Theoretical overview on tau physics
• Tau Physics 2006: Summary & Outlook
• Vector and Axial-Vector Spectral Functions and QCD
• Issues in the Extraction of m_s and V_us from Hadronic Tau Decay Data
• Leptonic Probes of the Standard Model
• Theoretical progress on the V_us determination from tau decays
• Recent Progress on Tau Lepton Physics
• From hadronic tau decays to the chiral couplings L_10 and C_87
• Importance of Precision Measurements in the Tau Sector
• The Joint Extraction of m_s and V_us From Hadronic Tau Decay Data