Sigma-meson and omega-rho mixing effects in omega --> pi^+ pi^- gamma decay

Abstract

We calculate the branching ratio of omega --> pi^+ pi^- gamma decay in a phenomenological framework in which the contributions of VMD, chiral loops, sigma-meson intermediate state amplitudes and the effects of omega-rho mixing are considered. We conclude that the sigma-meson intermediate state amplitude and omega-rho mixing make substantial contribution to the branching ratio.

Comments: 10 pages RevTex, 4 Figures, to be published in Acta Phys. Pol. B