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 U0(1)× U(1)× SU(2) gauge symmetry. Calculated radiative widths of vector mesons and effective couplings gVVS agree with the experimental data. Residual Higgs degrees of freedom are associated with scalar states a0(980) and f0(980) with the degeneration in masses. Two-gamma decays of π0- and σ- mesons are analyzed in detail. To provide an "infrared confinement" a cutoff procedure has been also used in calculations.
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