Estimates for parameters and characteristics of the confining SU(3)-gluonic field in $\eta$-meson from two-photon decay

Abstract

On the basis of the confinement mechanism earlier proposed by author, the electric form factor of $\eta$-meson is nonperturbatively calculated. The latter is then applied to describe electromagnetic decay $\eta\to2\gamma$ which entails estimates for parameters of the confining SU(3)-gluonic field in $\eta$-meson. The corresponding estimates of the gluon concentrations, electric and magnetic colour field strengths are also adduced for the mentioned field.