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VOLUME 27 (1978) | ISSUE 1 | PAGE 60
Gluon condensate and leptonic decays of vector mesons
We consider the power-law corrections to the asymptotic-freedom predictions for vacuum polarization by a photon. The corrections are determined by the square of the gluon-field stress tensor (gluon condensate) averaged over the vacuum. The analysis makes it possible to calculate the lepton widths of the p° and φ° mesons. The results agree well with experiment.