The decay ${\rho }^0\to {\pi }^0{\pi }^0\gamma$ and the role of $\sigma$-meson

Abstract

We study the radiative decay ${\rho }^0\to {\pi }^0{\pi }^0\gamma$ within the framework of a phenomenological approach in which the contributions of $\sigma$-meson and $\omega$-meson intermediate states and of the pion-loops are considered. We conclude that the $\sigma$-meson amplitude provides the dominant contribution.

12 pages, LATEX, 3 PS figures

References in corpus (2)

• Radiative decay of rho^0 and phi mesons in a chiral unitary approach
• The decay ${\rho }^0\to {\pi }^{+}+{\pi }^{-}+\gamma$ and the coupling constant g${}_{\rho \sigma \gamma }$

Cited by in corpus (10)

• Rho meson photoproduction at low energies
• Experimental Study of rho -> pi0 pi0 gamma and omega -> pi0 pi0 gamma Decays
• Scalar and vector meson exchange in V->P0P0gamma decays
• Chiral loops and VMD in the V->PPgamma decays
• Higher meson resonances in $\rho \to {\pi }^0{\pi }^0\gamma$ and $\omega \to {\pi }^0{\pi }^0\gamma$
• Scalar sigma meson effects in radiative rho^0-meson decays
• VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0 pi^0 gamma decay
• The $g_{V\sigma \gamma }$-coupling constants in hadron electrodynamic
• rho(omega)-> pi^0 pi^0 gamma, rho(omega) -> eta pi^0 gamma decays in the local quark Nambu--Jona-Lasinio model
• A consistent description of rho0 -> pi pi gamma decays including sigma(500) meson effects