Calculation of gluon and four-quark condensates from the operator expansion

Abstract

The magnitudes of gluon and four-quark condensates are found from the analysis of vector mesons consisting of light quarks (the families of $\rho$ and $\omega$ mesons) in the 3 loops approximation. The QCD model with infinite number of vector mesons is used to describe the function $R(s)$. This model describes well the experimental function $R(s)$. Polarization operators calculated with this model coincide with the Wilson operator expansion at large $Q^2$. The improved perturbative theory, such that the polarization operators have correct analytical properties, is used. The result is $<0|({\alpha }_s/\pi )G^2|0>=0.062\pm 0.019Ge{V}^4$. The electronic widths of $\rho (1450)$ and $\omega (1420)$ are calculated.

Comments: 18 pages, latex, changed content slightly