Hadronic η and η ′ decays
نویسنده
چکیده
The hadronic decays η, η′ → 3π and η′ → ηππ are investigated within the framework of U(3) chiral effective field theory in combination with a relativistic coupled-channels approach. Final state interactions are included by deriving sand p-wave interaction kernels for meson-meson scattering from the chiral effective Lagrangian and iterating them in a Bethe-Salpeter equation. Very good overall agreement with currently available data on decay widths and spectral shapes is achieved. PACS. 12.39.Fe Chiral Lagrangians – 13.25.Jx Decays of other mesons
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تاریخ انتشار 2005