Contribution of Higher Gluon Condensates to the Light Quark Vacuum Polarization
Jan, 1986Citations per year
Abstract: (Springer)
A method of classifying quark operators in QCD sum rules is suggested. The expansion coefficients of all thed≦8 bilinear quark condensates in gluon condensates are calculated. The coefficient functions at the gluon operators withd≦8 in the polarization operator ∏(q2) of the light-quark vector current are obtained. A comparison is performed with the calculations in the covariantly constant fields and self-dual fields. The results obtained can be used in the sum rules for the ρ, ω and ϕ families.- QUANTUM CHROMODYNAMICS: SUM RULE
- GLUON: CONDENSATION
- CORRECTION: HIGHER-ORDER
- GAUGE FIELD THEORY: BACKGROUND FIELD
- FIELD THEORY: VACUUM POLARIZATION
- VACUUM POLARIZATION: FIELD THEORY
- FIELD THEORY: OPERATOR PRODUCT EXPANSION
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