Theoretical study of the KKK system and dynamical generation of the K(1460) resonance

The KKK system is investigated with a coupled-channel approach based on solving the Faddeev equations considering the KKK, Kππ, and Kπη channels and using as input two-body t matrices that generate dynamically the f0(980) and a0(980) resonances. In the present calculation, a quasibound state around 1420 MeV with total isospin I=1/2 and spin-parity Jπ=0- is found below the three-kaon threshold. This state can be identified with the K(1460) resonance listed by the Particle Data Group. We also study the KKK system in a single-channel three-body potential model with two-body effective KK and KK interactions, in which the KK interaction is adjusted to reproduce the properties of the f0(980) and a0(980) resonances as KK bound states, obtaining a very similar result to the one found in the Faddeev approach.