Zusammenfassung
The light-by-light contribution from the lightest neutral pseudoscalar and
scalar mesons to the anomalous magnetic moment of muon is calculated in the
framework of the nonlocal SU(3)x SU(3) quark model. The model is based on
four-quark interaction of the Nambu-Jona-Lasinio type and
Kobayashi-Maskawa-t`Hooft six-quark interaction. Full kinematic dependence of
vertices with off-shell mesons and photons in intermediate states in the
light-by-light scattering amplitude is taken into account. The small positive
contributions from the scalar mesons stabilizes the total result with respect
to change of model parameters and reduces to a\_\mu^LbL,PS+S=(6.25\pm
0.83)x10^-10.
Nutzer