Investigation of the coupled K? K? N-?K?? system using Faddeev method

Base on the non-relativistic Faddeev AGS method, three-body calculations of the coupled and quasi-bound KKN-πKΣ system are performed in the momentum space. Different phenomenological models of KN-πΣ potentials with one and two-pole structures of KN-πΣ resonance are used to study the dependence of double-kaonic system binding energy on the coupled KN-πΣ interaction. Also, the effect of the KK repulsive interaction is investigated in this system. The results of this work show that the binding energy of KKN-πKΣ quasi-bound state is 61-110MeV and the width is about