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Contribution of higher gluon condensates to light-quark vacuum polarization

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Zeitschrift für Physik C Particles and Fields

Abstract

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 ∏(q 2) 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.

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Authors and Affiliations

  1. Institute of Nuclear Physics, SU-630090, Novosibirsk, USSR

    A. G. Grozin & Yu. F. Pinelis

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  1. A. G. Grozin
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  2. Yu. F. Pinelis
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Grozin, A.G., Pinelis, Y.F. Contribution of higher gluon condensates to light-quark vacuum polarization. Z. Phys. C - Particles and Fields 33, 419–425 (1987). https://doi.org/10.1007/BF01552548

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  • DOI: https://doi.org/10.1007/BF01552548

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