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arXiv · hep-ph/0301058

Hadronic decays of eta and eta-prime with coupled channels

N. Beisert·B. Borasoy
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Abstract

The hadronic decays eta -> pi pi pi, eta-prime -> pi pi pi and eta-prime -> eta pi pi are investigated within a U(3) chiral unitary approach. Final state interactions are included by deriving the effective s-wave potentials for meson meson scattering from the chiral effective Lagrangian and iterating them in a Bethe-Salpeter equation. With only a small set of parameters we are able to explain both rates and spectral shapes of these decays.

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N. Beisert, B. Borasoy. 2003-01-09. Hadronic decays of eta and eta-prime with coupled channels. https://doi.org/10.1016/s0375-9474(02)01585-3

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