Linear Sigma Model predictions for V->Sgamma and S->Vgamma decays

TL;DR

This paper uses the Linear Sigma Model to predict radiative decay rates of vector and scalar mesons, aligning well with current experimental data and providing estimates for unmeasured decay widths.

Contribution

It applies the Linear Sigma Model to calculate specific meson decay processes, offering predictions that match experimental results and extending understanding of these decays.

Findings

Successfully reproduces experimental branching ratios

Provides estimates for unmeasured decay widths

Supports ongoing experimental investigations

Abstract

The radiative decays $V\to S\gamma$ and $S\to V\gamma$ with $V=\rho, \omega, \phi$ and $S=a_0, \sigma, f_0$ are calculated within the framework of the Linear Sigma Model. Current experimental data on the $\phi\to f_0\gamma$ and $\rho\to\sigma\gamma$ branching ratios and the ratio $\Gamma(\phi\to f_0\gamma)/\Gamma(\phi\to a_0\gamma)$ are satisfactorily accommodated in our approach. We also estimate the decay widths of the $f_0,a_0\to\rho\gamma,\omega\gamma$ transitions. All the processes considered are of interest for ongoing experimental programs in Frascati, J\"ulich and Novosibirsk.