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

  • B. Borasoy
  • R. Nißler
Original Article

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.

PACS.

12.39.Fe Chiral Lagrangians 13.25.Jx Decays of other mesons 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2006

Authors and Affiliations

  • B. Borasoy
    • 1
  • R. Nißler
    • 1
  1. 1.Helmholtz-Institut für Strahlen- und Kernphysik (Theorie)Universität BonnBonnGermany

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