N. Beisert, B. Borasoy
Published 2003-01-09Version 1
The hadronic decays eta -> pi pi pi, eta-prime -> pi pi pi and eta-prime -> eta pi pi are investigated within a U(3) chiral unitary approach. Final state interactions are included by deriving the effective s-wave potentials for meson meson scattering from the chiral effective Lagrangian and iterating them in a Bethe-Salpeter equation. With only a small set of parameters we are able to explain both rates and spectral shapes of these decays.
Comments: 23 pages
Journal: Nucl.Phys.A716:186-208,2003
eta, eta-prime --> pi+ pi- l+ l- in a chiral unitary approach
eta in the nuclear medium within a chiral unitary approach
$η\to π^0 γγ$ decay within a chiral unitary approach revisited
