Particle representation for $NN{\bar K}$ system

Branislav Vlahovic, Igor Filikhin, Roman Ya. Kezarashvili

SciPost Phys. Proc. 3, 044 (2020) · published 27 February 2020

Proceedings event

24th European Few Body Conference

Abstract

In the framework of the Faddeev equations in configuration space we perform an analysis of quasi-bound state of the $NN{\bar K}$ system within a particle model. In our approach, the system $NN{\bar K}(s_{NN}=0)$ ($NN{\bar K}(s_{NN}=1))$ is described as a superposition of $ppK^{-}$ and $pn{\bar K}^0$ ($nn{\bar K}^{0}$ and $pn{ K}^-$) states, which is possible due to a particle transition. The relation of the particle model to the theory of a two-state quantum system is addressed and discussed taking into account the possibilities of deep and shallow $NN{\bar K}(s_{NN}=0)$ quasi-bound states.


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