$NDK$, $\bar{K}DN$ and $ND\bar{D}$ molecules

Abstract

We investigate theoretically baryon systems made of three hadrons which contain one nucleon and one D meson, and in addition another meson, $\bar{D},K$ or $\bar{K}$. The systems are studied using the Fixed Center Approximation to the Faddeev equations. The study is made assuming scattering of a $K$ or a $\bar{K}$ on a $DN$ cluster, which is known to generate the ${\Lambda }_c(2595)$, or the scattering of a nucleon on the $D\bar{D}$ cluster, which has been shown to generate a hidden charm resonance named X(3700). We also investigate the configuration of scattering of $N$ on the $KD$ cluster, which is known to generate the $D_{s0}^{\ast }(2317)$. In all cases we find bound states, with the $NDK$ system, of exotic nature, more bound than the $\bar{K}DN$.

Comments: 9 figures