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

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

2003-02-17

arxiv.org/abs/hep-ph/0302129v1

Phys.Rev. D67 (2003) 073007

Physics

High Energy Physics

High Energy Physics - Phenomenology

to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.67.073007

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.

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