2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42541We 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.10 pages RevTex, 4 Figures, to be published in Acta Phys. Pol. BHigh Energy Physics - Phenomenologytext