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Hadronic η and \( \eta{^\prime}\) decays

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Abstract.

The hadronic decays η,\( \eta{^\prime}\)↦3π and \( \eta{^\prime}\)↦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 s- and 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.

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Authors and Affiliations

  1. Helmholtz-Institut für Strahlen- und Kernphysik (Theorie), Universität Bonn, Nußallee 14-16, D-53115, Bonn, Germany

    B. Borasoy & R. Nißler

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  1. B. Borasoy
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  2. R. Nißler
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Borasoy, B., Nißler, R. Hadronic η and \( \eta{^\prime}\) decays. Eur. Phys. J. A 26, 383–398 (2005). https://doi.org/10.1140/epja/i2005-10188-9

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  • DOI: https://doi.org/10.1140/epja/i2005-10188-9

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