$KΛ(1405)$ configuration of the $K\bar{K}N$ system

Abstract

We study the $KΛ(1405)$ configuration of the $K\bar{K}N$ system by considering $KπΣ$ as a coupled channel. We solve the Faddeev equations for these systems and find confirmation of the existence of a new $N^{*}$ resonance around 1920 MeV with $J^π=1/2^{+}$ predicted in a single-channel potential model and also found in a Faddeev calculation as an $a_{0}(980)N$ state, with the $a_{0}(980)$ generated in the $K\bar{K}$, $πη$ interaction.

Published version