The decay 1-→O-γ and O-→1-γ in a broken-SU4 model

The decay rates for the radiative processes 1-→O-γ and O-→1-γ are calculated with a phenomenological Hamiltonian in a broken-SU4 model proposed by Gaillard et al., using the mixing scheme of Kajantie et al. and introducing a mass-dependent suppression factor. The model predicts the existence of a vector meson phi sub(c) and of pseudoscalar mesons eta sub(c) of masses 2.77 GeV and 2.37 GeV, respectively. The rates we found are either in the keV range or smaller. (author)