V-A sum rules with D=10 operators

Abstract

The difference of vector and axial-vector charged current correlators is analyzed by means of QCD sum rules. The contribution of 10-dimensional 4-quark condensates is calculated and its value is estimated within the framework of factorization hypothesis. It is compared to the result, obtained from operator fit of Borel sum rules in the complex q^2-plane, calculated from experimental data on hadronic tau-decays. This fit gives accurate values of the light quark condensate and quark-gluon mixed condensate. The size of the high-order operators and the convergence of operator series are discussed.

9 pages, 7 figure files. v2: references added. v3: more careful treatment of errors, to appear in EPJC

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Cited by in corpus (15)

• Precision Tau Physics
• The Physics of Hadronic Tau Decays
• Duality violations and spectral sum rules
• Geometric approach to condensates in holographic QCD
• Unraveling duality violations in hadronic tau decays
• Possible duality violations in tau decay and their impact on the determination of alpha_s
• Pinched weights and Duality Violation in QCD Sum Rules: a critical analysis
• Violation of Quark-Hadron Duality and Spectral Chiral Moments in QCD
• Updated determination of chiral couplings and vacuum condensates from hadronic tau decay data
• Low-energy constants and condensates from the tau hadronic spectral functions
• Determination of QCD condensates from tau-decay data
• QCD Description of Hadronic Tau Decays
• QCD condensates of dimension D=6 and D=8 from hadronic tau-decays
• Relations between vacuum condensates and low energy parameters from a rational approach
• Duality violation in QCD Sum Rules with the LR correlator