Phenomenological description of the $D_{s0}^{\ast }(2317)\to D_s\ddot{I}{€}^0$ decay

N. N. Achasov, G. N. Shestakov

For coupled channels $D^0{K}^{+}$, $D^{+}{K}^0$, $D_s^{+}\hat{I}\cdot$, and $D_s^{+}\ddot{I}{€}^0$, the $S$-wave scattering amplitudes are constructed taking into account the mixing of the isoscalar resonance $D…