Theoretical study of the $KK\bar{K}$ system and dynamical generation of the K(1460) resonance

Abstract

The $KK\bar{K}$ system is investigated with a coupled channel approach based on solving the Faddeev equations considering the $KK\bar{K}$, $K\pi \pi$ and $K\pi \eta$ channels and using as input two-body $t$-matrices that generate dynamically the $f_0(980)$ and $a_0(980)$ resonances. In the present calculation, a quasibound state around 1420 MeV with total isospin $I=1/2$ and spin-parity $J^{\pi }=0^{-}$ 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 $KK\bar{K}$ system in a single channel three-body potential model with two-body effective $KK$ and $K\bar{K}$ interactions, in which the $K\bar{K}$ interaction is adjusted to reproduce the properties of the $f_0(980)$ and $a_0(980)$ resonances as $K\bar{K}$ bound states, obtaining a very similar result to the one found in the Faddeev approach.

Published version

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Cited by in corpus (24)

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• Baryon bound states of three hadrons with charm and hidden charm
• Hadronic few-body systems in chiral dynamics, -- Few-body systems in hadron physics --