Scalar sigma meson effects in radiative rho^0-meson decays

Abstract

We study the radiative ${\rho }^0\to {\pi }^{+}{\pi }^{-}\gamma$ and ${\rho }^0\to {\pi }^0{\pi }^0\gamma$ decays and we calculate their branching ratios using a phenomenological approach by adding to the amplitude calculated within the framework of chiral perturbation theory and vector meson dominance the amplitude of $\sigma$-meson intermediate state. Our results for the branching ratios are in good agreement with the experimental values.

to be published in Phys. Rev. D

References in corpus (2)

• Experimental Study of rho -> pi0 pi0 gamma and omega -> pi0 pi0 gamma Decays
• Chiral loops and VMD in the V->PPgamma decays

Cited by in corpus (6)

• Study of the Process e+ e- --> pi0 pi0 gamma in c.m. Energy Range 600--970 MeV at CMD-2
• Scalar and vector meson exchange in V->P0P0gamma decays
• Higher meson resonances in $\rho \to {\pi }^0{\pi }^0\gamma$ and $\omega \to {\pi }^0{\pi }^0\gamma$
• VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0 pi^0 gamma decay
• Role of resonances in rho^0 -> pi^+ pi^- gamma
• A consistent description of rho0 -> pi pi gamma decays including sigma(500) meson effects