ON THE HADRONIC CONTRIBUTION TO THE MUON (G-2)-FACTOR AND TO THE ALPHA(M(Z)(2))

The hadronic vacuum-polarization contributions to the muon anomalous m agnetic momentum a(mu)(hadr.) and to the value of the electromagnetic coupling constant at q(2) = M(z)(2) are calculated with the record acc uracy. A QCD model with an infinite number of vector mesons suggested by one of the authors is used. In this model the non-perturbative effe cts are included automatically. The results are: a(mu)(hadr.) = 670(7) x 10(-10), a(mu)(theor.) = 11659153(7) x 10(-10), delta alpha(hadr), (M(z)(2)) = 0.02780(6)and alpha(M(z)(2)) = (128.921(8))(-1).