Heavy $K^{\ast }(4307)$ meson with hidden charm

Abstract

We report on a robust prediction of heavy $K^{\ast }$ meson by solving the Faddeev equations with fixed-center approximation for the three-body $KD{\bar{D}}^{\ast }$ system. As the excited Kaon state, $K^{\ast }$ is an exotic hidden charm meson with $M-i\Gamma /2=4307\pm 2-i9\pm 2$ MeV and $I(J^P)=1/2(1^{-})$. We further performed the evaluation of the decay width of $K^{\ast }(4307)$ to the open two-body channels. We expect that the above findings inspire an experimental investigation of this exotic $K^{\ast }$ meson and to study the so far unexplored heavy strange meson sector.

Comments: Proceeding Hadron 2019, Guilin, China, 16-21 August 2019