Small-Size Instanton Corrections to the $\tau$ Hadronic Width

Abstract

We compute the effect of small-size instanton corrections to current-current correlators, for all combinations of axial, vector, and possibly flavour non-diagonal currents. We apply our result to the hadronic decays of the $\tau$ lepton, in order to assess the reliability of the determination of $\as$ from the $\tau$ hadronic width.

13 pages (LaTeX file), CERN-TH.6787/93 NYU-TH.92/11/03

Cited by in corpus (20)

• Renormalons
• Precision Tau Physics
• QCD tests from $e^+e^- \rar I=1~$ hadrons data and implication on the value of ${\alpha }_s$ from $\tau$-decays
• Critical phenomena at perfect and non-perfect surfaces
• On the QCD Sum Rule Determination of the Strange Quark Mass
• Order-${\alpha }_s^3$ determination of the strange quark mass
• A Study of Ultraviolet Renormalon Ambiguities in the Determination of $\as$ from $\tau$ Decay
• Reflection-Transmission Algebras
• Improved light quark masses from pseudoscalar sum rules
• The quantum non-linear Schrodinger model with point-like defect
• QCD Predictions for the Tau Hadronic Width: Determination of alpha_s(M_τ^2)
• Implications of the ALEPH tau-Lepton Decay Data for Perturbative and Non-Perturbative QCD
• Aspects of sine-Gordon solitons, defects and gates
• Perturbative QCD Calculations of Total Cross Sections and Decay Widths in Hard Inclusive Processes
• Finite Temperature Quantum Field Theory with Impurities
• Instantons and the Spin of the Nucleon
• Direct Instanton Effects in Current-Current Correlators
• Instanton--anti-instanton pair induced contributions to $R_{e^{+}{e}^{-}\to hadrons}$ and $R_{\tau \to hadrons}$
• Instanton Contribution to $B\to X_s\gamma$ Decay
• QCD parameters and SM-high precision from $e^{+}{e}^{-}$ to Hadrons: Updated