Predicition for the decay width of a charged state near the $D_s{\bar{D}}^{\ast }/D_s^{\ast }\bar{D}$ threshold

Abstract

Very recently it was predicted the existence of a charged state near the $D_s{\bar{D}}^{\ast }/D_s^{\ast }\bar{D}$ threshold. This state, that we call $Z_{cs}^{+}$, would be the strange partner of the recently observed $Z_c^{\pm }(3900)$. Using standard techniques of QCD sum rules, we evaluate the three-point function for the vertices $Z_{cs}^{+}J/\psi K^{+}$, $Z_{cs}^{+}{\eta }_c{K}^{\ast +}$ and $Z_{cs}^{+}{D}_s^{+}{\bar{D}}^{\ast 0}$ and we make predictions for the corresponding decay widths in these channels.

9 pages, 6 figures

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Cited by in corpus (28)

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• QCD Sum Rules Approach to the $X,Y$ and $Z$ States
• About the exotic structure of $Z_{cs}$
• Analysis of the $Z_{cs}(3985)$ as the axialvector tetraquark state
• Updated Cross Section Measurement of $e^{+}{e}^{-}\to K^{+}{K}^{-}J/\psi$ and $K_S^0{K}_S^{0}J/\psi$ via Initial State Radiation at Belle
• Toward charged $Z_{cs}(3985)$ structure under a reflection mechanism
• Exotic ${\bar{D}}_s^{(\ast )}{D}^{(\ast )}$ molecular states and $sc\bar{q}\bar{c}$ tetraquark states with $J^P=0^{+},1^{+},2^{+}$
• Observation of a vector charmoniumlike state at 4.7 $\mathrm{GeV}/c^2$ and search for $Z_{cs}$ in $e^{+}{e}^{-}\to K^{+}{K}^{-}J/\psi$
• ${\bar{D}}_s^{(\ast )}{D}^{(\ast )}$ molecular state with $J^P=1^{+}$
• Evidence for a neutral near-threshold structure in the $K_{\mathrm{S}}^0$ recoil-mass spectra in $e^{+}{e}^{-}\to K_{\mathrm{S}}^0{D}_s^{+}{D}^{\ast -}$ and $e^{+}{e}^{-}\to K_{\mathrm{S}}^0{D}_s^{\ast +}{D}^{-}$
• Photoproduction of strange hidden-charm and hidden-bottom states
• The newly observed $Z_{cs}(3985{)}^{-}$ state: in vacuum and a dense medium
• Production of $Z_{cs}$ in $B$ and $B_s$ decay
• The decay widths of the $Z_{cs}(3985/4000)$ based on rigorous quark-hadron duality
• The strange cousin of the $Z_c(4020/4025)$ as tetraquark state
• Hadronic molecular states with the quark contents $bc\bar{s}\bar{q}$, $b\bar{c}s\bar{q}$, and $b\bar{c}\bar{s}q$
• Rare ${\Lambda }_c$ decays and new physics effects
• Search for $XYZ$ states in ${\rm Y}(1S)$ inclusive decays
• Spin and polarization analysis of $Z_{cs}$ state
• Experimental review of the ${\rm Y}(1S,2S,3S)$ physics at $e^{+}{e}^{-}$ colliders and the LHC
• The $Z_{cs}$ states and the mixture of hadronic molecule and diquark-anti-diquark components within effective field theory
• Spectrum of Hidden-Charm, Open-Strange Exotics in the Dynamical Diquark Model
• Hunting for the heavy quark spin symmetry partner of $Z_{cs}$
• Baryons and baryoniums in the perspective of QCD sum rules
• Branching fraction measurement of the decay $B^{+}\to \psi (2S)\varphi (1020)K^{+}$