More hidden heavy quarkonium molecules and their discovery decay modes

الأصل · EN

To validate the molecular description of the observed Zb(10610)/Zb(10650) and Zc(3900)/Zc(4025), it is valuable to investigate their counterparts, denoted as ZQV⁽′⁾ in this work, and the corresponding decay modes. In this work, we present an analysis of the ZQV⁽′⁾ using flavor symmetry. We also use the effective Lagrangian based on the heavy quark symmetry to explore the rescattering mechanism and calculate the partial widths for the isospin conserved channels ZQV⁽′⁾ → ηQ V. The predicted partial widths are of an order of MeV for ZQV → ηQ V, which correspond to branching ratios of the order of 10⁻² 10⁻¹. For ZQV′ → ηQ V, the partial widths are a few hundreds of keV and the branching ratios are about 10⁻³. Future experimental measurements can test our predictions on the partial widths and thus examine the molecule description of heavy quarkoniumlike exotic states.