https://doi.org/10.1140/epjc/s10052-015-3438-1
Regular Article - Theoretical Physics
Predictions for the 
decay
1
Departamento de Física, Universidad de Murcia, 30100, Murcia, Spain
2
Helmholtz-Institut für Strahlen- und Kernphysik (Theorie), Universität Bonn and Bethe Center for Theoretical Physics, 53115, Bonn, Germany
3
Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071, Valencia, Spain
4
Forschungszentrum Jülich, Institut für Kernphysik, Institute for Advanced Simulation, Jülich Center for Hadron Physics, 52425, Jülich, Germany
* e-mail: luisroca@um.es
Received:
17
March
2015
Accepted:
28
April
2015
Published online:
19
May
2015
We calculate the shape of the 
and 
invariant mass distributions in the 
and 
decays that are dominated by the 
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 
in photoproduction, based on the two-pole scenario for the . 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.
© SIF and Springer-Verlag Berlin Heidelberg, 2015
