Analysis of the (Ξ)over-barccΞcc hexaquark molecular state with the QCD sum rules

In this work, we construct the color-singlet-color-singlet type six-quark pseudoscalar current to investigate the (Xi) over bar (cc)Xi(cc) hexaquark molecular state with the QCD sum rules, the predicted mass M-X similar to 7.2 GeV supports assigning the X(7200) to be the (Xi) over bar (cc)Xi(cc) hexaquark molecular state with the quantum numbers J(PC) = 0(-+). The X(7200) can decay through fusions of the (c) over barc and (q) over barq pairs, we can search for the X(7200) and explore its properties in the J/psi J/psi, chi c1 chi c1, D*(D) over bar* and D-1(D) over bar (1) invariant mass spectrum in the future. (C) 2021 The Author(s). Published by Elsevier B.V.

Automated summary

In this study, a color-singlet-color-singlet type six-quark pseudoscalar current was constructed to investigate the (Ξ)(cc)Ξ(cc) hexaquark molecular state using QCD sum rules. The predicted mass of X(7200) around 7.2 GeV suggests it could be assigned as the (Ξ)(cc)Ξ(cc) hexaquark molecular state with quantum numbers J(PC) = 0(-+). The future exploration of X(7200) and its properties can be done through studying the invariant mass spectrum of J/ψ J/ψ, χc1 χc1, D*(D)Dbar and D-1(D)Dbar (1).