Hadronic decays of eta and eta-prime with coupled channels

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.

23 pages

References in corpus (2)

• Eta, eta-prime photoproduction and electroproduction off nucleons
• S-wave Meson-Meson Scattering from Unitarized U(3) Chiral Lagrangians

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