Axial-vector molecular structures Bc*±Bc∓
Creators
- 1. Institute for Physical Problems, Baku State University, Baku, Az–1148, Azerbaijan
- 2. Department of Physics, University of Tehran, North Karegar Avenue, Tehran, 14395-547, Iran
- 3. Department of Physics Engineering, Istanbul Medeniyet University, Istanbul, 34700, Türkiye
Description
The axial-vector molecular structure MAV=(Bc*+Bc−+Bc*−Bc+)/2 is explored in QCD sum rule framework. The mass and current coupling of this compound are found by means of the two-point sum rule method. It turns out that the mass of MAV is equal to m=(12770±60)MeV making possible its dissociations to pairs of J/ψηb, Υηc, Bc*+Bc−, and Bc*−Bc+ mesons. The partial widths of these decay modes contain the strong couplings at MAV-meson-meson vertices which are calculated by utilizing the three-point sum rule method. The full decay width of the molecule MAV is formed due to these dominant processes and amounts to Γ[MAV]=(93±14)MeV. Our results for parameters m and Γ[MAV] of the hadronic molecule MAV are useful for experimental studies of various fully heavy four-quark mesons.
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