Strong decays of the fully-charm tetraquark states with explicit P-waves via the QCD sum rules

Abstract

We introduce a relative P-wave to construct the vector doubly-charm diquark $(\tilde{V})$, therefore, the scalar and tensor four-quark currents to investigate the decay widths of the fully-charm tetraquark states with the $J^{PC}=0^{++}$, $1^{+-}$ and $2^{++}$ via the QCD sum rules. We observe that the total width of the ground state $\tilde{V}\overline{\tilde{V}}$-type scalar tetraquark state is compatible with that of the $X(6552)$ within the uncertainties, and the branching ratios are quite different from that of the first radial excitation of the $A\bar{A}$-type scalar tetraquark state. Other predictions can be verified in the future experiments to shed light on the nature of the fully-charm tetraquark states.

14 pages, 2 figures

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Cited by in corpus (2)

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