title: Predictions for the [Formula: see text] decay.
abstract: We calculate the shape of the [Formula: see text] and [Formula: see text] invariant mass distributions in the [Formula: see text] and [Formula: see text] decays that are dominated by the [Formula: see text] resonance. The weak interaction part is the same for both processes and the hadronization into the different meson-baryon channels in the final state is given by symmetry arguments. The most important feature is the implementation of the meson-baryon final-state interaction using two chiral unitary models from different theoretical groups. Both approaches give a good description of antikaon-nucleon scattering data, the complex energy shift in kaonic hydrogen and the line shapes of [Formula: see text] in photoproduction, based on the two-pole scenario for the [Formula: see text]. We find that this reaction reflects more the higher mass pole and we make predictions of the line shapes and relative strength of the meson-baryon distributions in the final state.
authors.affiliation: Departamento de Física, Universidad de Murcia, 30100 Murcia, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Roca
authors.affiliation: Helmholtz-Institut für Strahlen- und Kernphysik (Theorie), Universität Bonn and Bethe Center for Theoretical Physics, 53115 Bonn, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Mai
authors.affiliation: Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071 Valencia, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Oset
authors.affiliation: Helmholtz-Institut für Strahlen- und Kernphysik (Theorie), Universität Bonn and Bethe Center for Theoretical Physics, 53115 Bonn, Germany.|Forschungszentrum Jülich, Institut für Kernphysik, Institute for Advanced Simulation, Jülich Center for Hadron Physics, 52425 Jülich, Germany.
authors.forename: Ulf-G
authors.initials: UG
authors.lastname: Meißner