The gauge model of quark-meson interactions and the Higgs status of scalar mesons.

Abstract

Electromagnetic and strong hadron processes at low energies are considered in the renormalizable model with the spontaneously broken U 0 (1) × U (1) × SU (2) gauge symmetry. Calculated radiative widths of vector mesons and effective couplings g V V S agree with the experimental data. Residual Higgs degrees of freedom are associated with scalar states a 0 (980) and f 0 (980) with the degeneration in masses. Two-gamma decays of π 0 − and σ− mesons are analyzed in detail. To provide an "infrared confinement" a cutoff procedure has been also used in calculations.