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

To identify the nature of the newly observed charged resonance , Z(c)(4200)(+) . we study its hadronic decays Z(c)(4200)(+) -> J/psi pi(+) Z(c)(4200)(+) -> eta(c)p(+) and Z(c)(4200)(+) -> D+ D*(0) 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 state is consistent with the experimental value reported by the Belle Collaboration, supporting the tetraquark interpretation of this state.Natural Sciences and Engineering Research Council of Canada (NSERC); National Natural Science Foundation of China [11261130311, 11205011, 11475015]SCI(E)ARTICLEhxchen@buaa.edu.cn; zhusl@pku.edu.cn87