Hidden local symmetry for anomalous processes with isospin- and SU(3)-breaking effects

We show that isospin- and SU(3)-breaking terms can be introduced to the anomalous $\mathrm{VVP}$ coupling in the hidden local symmetry scheme without changing the Wess-Zumino-Witten term in the low-energy limit. We make the analysis for anomalous processes of two-body and three-body decays such as radiative vector meson decays ($V\to P\gamma$), conversion decays of a photon into a lepton pair ($V\to P{l}^{+}{l}^{-}$), and hadronic anomalous decays ($V\to \mathrm{PPP}$). The predictions successfully reproduce all experimental data of anomalous decays. In particular, we predict the decay widths of ${\rho }^0\to {\pi }^0\gamma$ and $\phi \to {\eta }^{\prime }\gamma$ as 101±9 keV and 0.508±0.035 keV, respectively, which will be tested in the $\mathrm{DA}\Phi \mathrm{NE}$ $\phi$ factory. Moreover, predictions are also made for $\phi \to {\pi }^0{e}^{+}{e}^{-}$, $\rho \to 3\pi$, $K^{*}\to K\pi \pi$, and so on, for which only the experimental upper bounds are available now.