Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-05-28
Phys.Rev. D54 (1996) 5611-5619
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages, 4 tables, no figure
Scientific paper
10.1103/PhysRevD.54.5611
We show that isospin/SU(3) breaking terms can be introduced to the anomalous VVP coupling in the hidden local symmetry scheme without changing Wess-Zumino-Witten term in the low-energy limit. We make the analysis for anomalous processes of 2-body and 3-body decays; radiative vector meson decays(V \to P\gamma), conversion decays of photon into a lepton pair(V \to P l^+ l^-) and hadronic anomalous decays(V \to 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' \gamma as 101 \pm 9 keV and 0.508 \pm 0.035 keV, respectively, which will be tested in the DAFNE \phi-factory. Moreover, prediction is 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.
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