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

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arxiv 1501.03863 v2 pith:DZBA2QK4 submitted 2015-01-16 hep-ph

Wei Chen , T. G. Steele , Hua-Xing Chen , Shi-Lin Zhu This is my paper · ORCID
classification hep-ph
keywords statedecaytetraquarkcharmonium-likewidthbellecalculatechannels
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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.

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  1. Heavy hadronic molecules with pion exchange and quark core couplings: a guide for practitioners

    hep-ph 2019-08 conditional novelty 5.0 of 10

    X(3872) is best described as a shallow D D* molecule in which one-pion exchange and a small charmonium core provide comparable attraction.

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