QCD condensates from tau-decay data: A functional approach

Abstract

We study a functional method to extract the V-A condensate of dimension 6 from a comparison of tau-decay data with the asymptotic space-like QCD prediction. Our result is in agreement within errors with that from conventional analyses based on finite energy sum rules.

LaTeX, 9 pages, Acknowledgment added

References in corpus (8)

• Measurement of the Strong Coupling Constant and the Vector and Axial-Vector Spectral Functions in Hadronic Tau Decays
• Finite Energy Chiral Sum Rules and Tau Spectral Functions
• Matching the Electroweak Penguins $Q_7$, $Q_8$ and Spectral Correlators
• The V-A sum rules and the Operator Product Expansion in complex q^2-plane from tau-decay data
• QCD Condensates for the Light Quark V-A Correlator
• Improved Determination of the Electroweak Penguin Contribution to epsilon'/epsilon in the Chiral Limit
• Determination of <2pi_{I=2}|Q_{7,8}|K0> in the Chiral Limit
• Renormalization of 4-Quark Operators and QCD-Sum Rules

Cited by in corpus (9)

• The Physics of Hadronic Tau Decays
• Duality violations and spectral sum rules
• Violation of Quark-Hadron Duality and Spectral Chiral Moments in QCD
• Evidence for In-Medium Changes of Four-Quark Condensates
• Determination of QCD condensates from tau-decay data
• QCD condensates of dimension D=6 and D=8 from hadronic tau-decays
• Weinberg like sum rules revisited
• Duality violation in QCD Sum Rules with the LR correlator
• Impact of Duality Violations on Spectral Sum Rule Analyses