We study the decay of dynamically generated resonances from the interaction of two vectors into a γ and a pseudoscalar meson. The dynamics requires anomalous terms involving vertices with two vectors and a pseudoscalar, which renders it special. We compare our result with data on K∗+(1430)→K+γ and K∗0(1430)→K0γ and find a good agreement with the data for the K∗+(1430) case and a width considerably smaller than the upper bound measured for the K∗0(1430) meson.
@article{arxiv.1009.4881,
title = {Decay of vector-vector resonances into $\gamma$ and a pseudoscalar meson},
author = {R. Molina$^1$ and H. Nagahiro$^2$ and A. Hosaka$^3$ and E. Oset$^1$},
journal= {arXiv preprint arXiv:1009.4881},
year = {2011}
}