Zc(4200)+ decay width as a charmonium-like tetraquark state

Abstract

To identify the nature of the newly observed charged resonance Zc(4200), we study its hadronic decays Zc(4200) -> J/psi pi, Zc(4200) -> eta_c rho and Zc(4200) -> D bar D* as a charmonium-like tetraquark state. In the framework of the QCD sum rules, we calculate the three-point functions and extract the coupling constants and decay widths for these interaction vertices. Including all these channels, the full decay width of the Zc(4200) state is consistent with the experimental value reported by the Belle Collaboration, supporting the tetraquark interpretation of this state.

8 pages, 6 figures, published in EPJC

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• A review of the open charm and open bottom systems
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• Landau equation and QCD sum rules for the tetraquark molecular states
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• Systematic study of $Z_c^{+}$ family from quark model's perspective
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Hidden charmed states and multibody color flux-tube dynamics
• The newly observed $Z_{cs}(3985{)}^{-}$ state: in vacuum and a dense medium
• Photoproduction of the charged charmoniumlike $Z_c^{+}(4200)$
• Triply-charmed dibaryon states or two-baryon scattering states from the QCD sum rules?
• Electromagnetic form factors of the $B_c$-like tetraquarks: molecular and diquark-antidiquark pictures
• $Z_c(4430)$ and $Z_c(4200)$ as triangle singularities
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• Triply-charmed hexaquark states with the QCD sum rules
• Analysis of the decay $Y(4500)\to D^{\ast }{\bar{D}}^{\ast }\pi$ with the light-cone QCD sum rules
• Scalar hidden-charm tetraquark states with QCD sum rules
• Large regular reflecting stars have no scalar field hair
• Strong decays of the vector tetraquark states with the masses about $4.5\mathrm{GeV}$ via the QCD sum rules
• Light meson emissions of the selected charmonium-like states within compact tetraquark configurations