The two-body strong decays of the fully-charm tetraquark states

Abstract

We study the hadronic coupling constants in the two-body strong decays of the fully-charm tetraquark states with the $J^{PC}=0^{++}$, $1^{+-}$ and $2^{++}$ via the QCD sum rules based on rigorous quark-hadron duality. Then we obtain the hadronic coupling constants and partial decay widths therefore total decay widths, which support assigning the $X(6552)$ as the first radial excitation of the scalar tetraquark state. And other predictions can be used to diagnose exotic states in the future.

17 pages, 3 figures

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Cited by in corpus (3)

• Strong decays of the fully-charm tetraquark states with explicit P-waves via the QCD sum rules
• Investigating the internal structure of $X(6900)$ in the $2J/\psi$ decay channel
• Two-body strong decays of the hidden-charm tetraquark molecular states via the QCD sum rules