What question did this study set out to answer?

This work aims to study the properties of pseudoscalar hidden-charm tetraquark states through their decay processes.

May 14, 2026

Two-body strong decays of the pseudoscalar hidden-charm tetraquark states via the QCD sum rules

Puntos clave

This work aims to study the properties of pseudoscalar hidden-charm tetraquark states through their decay processes.
Analyzed two-body strong decays using QCD sum rules
Considered vacuum condensates up to dimension 5 on the QCD side
Calculated hadronic coupling constants.
Obtained total decay widths of X MeV and Y MeV for the tetraquark states
Identified the diquark-antidiquark structure for each tetraquark state

Resumen

In this work, we study the properties of the pseudoscalar hidden-charm tetraquark states by analyzing their two-body strong decays via the QCD sum rules based on rigorous quark-hadron duality. We take into account the vacuum condensates up to dimension 5 on the QCD side, and obtain the hadronic coupling constants. At last, we obtain the total decay widths Formula: see text MeV and Formula: see text MeV, respectively, where the Formula: see text(Formula: see text) and Formula: see text(Formula: see text) denote the pseudoscalar hidden-charm tetraquarks with the diquark-antidiquark structures Formula: see text and Formula: see text, respectively.

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