Predictions of charged charmonium-like structures with hidden-charm and open-strange channels

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We propose the initial single chiral particle emission mechanism, with which the hidden-charm di-kaon decays of higher charmonia and charmonium-like states are studied. Calculating the distributions of differential decay width, we obtain the line shape of the J/ψK+ invariant mass spectrum of ψᵢ→ J/ψK+K-, where ψᵢ=ψ(4415), Y(4660), and ψ(4790). Our numerical results show that there exist enhancement structures with both hidden-charm and open-strange decays, which are near the DDₛ*/D*Dₛ and D*Dₛ*/D*Dₛ* thresholds. These charged charmonium-like structures predicted in this Letter can be accessible in future experiments, especially BESIII, BelleII, and SuperB.