Regular Article - Hadron Physics
η, → πl+l- in a chiral unitary approach
Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik (Theorie), Nussallee 14-16, D-53115, Bonn, Germany
Accepted: 8 June 2007
Published online: 2 July 2007
The decays η, → π+π- l + l - (with l = e,μ are investigated within a chiral unitary approach which combines the chiral effective Lagrangian with a coupled-channels Bethe-Salpeter equation. Predictions for the decay widths and spectra are given.
PACS: 13.20.Jf Decays of other mesons – / 12.39.Fe Chiral Lagrangians –
© Società Italiana di Fisica and Springer-Verlag, 2007