https://doi.org/10.1140/epja/i2005-10188-9
Original Article
Hadronic η and
decays
Helmholtz-Institut für Strahlen- und Kernphysik (Theorie), Universität Bonn, Nußallee 14-16, D-53115, Bonn, Germany
Received:
2
November
2005
Accepted:
20
December
2005
Published online:
23
January
2006
The hadronic decays η,↦3π and
↦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 –
© Società Italiana di Fisica and Springer-Verlag, 2006