☆ 4.5 Article

Theoretical study of the KK(K)over-bar system and dynamical generation of the K(1460) resonance

PHYSICAL REVIEW C (2011)

Journal

PHYSICAL REVIEW C

Volume 83, Issue 6, Pages -

Publisher

AMER PHYSICAL SOC

DOI: 10.1103/PhysRevC.83.065205

Keywords

-

Categories

Physics, Nuclear

Funding

Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan [22105507, 22540275]
Grants-in-Aid for Scientific Research [22105507, 22540275] Funding Source: KAKEN

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Abstract

The KK (K) over bar system is investigated with a coupled-channel approach based on solving the Faddeev equations considering the KK (K) over bar, 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 (K) over bar system in a single-channel three-body potential model with two-body effective KK and K (K) over bar interactions, in which the K (K) over bar interaction is adjusted to reproduce the properties of the f(0)(980) and a(0)(980) resonances as K (K) over bar bound states, obtaining a very similar result to the one found in the Faddeev approach.

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