2025/12/28 by S. S. Agaev, K. Azizi, Agaev, S. S. +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · doi:10.48550/arxiv.2512.23030
openalex publication_date 2025/12/28 · openalex created_date 2025/12/31 · openalex updated_date 2026/07/28
Hadronic molecules \mathfrakM=J/ψBc+ and \widetilde\mathfrak M=ηcBc∗ + are investigated in the framework of QCD sum rule method. These particles with spin-parities JP=1+ have the quark contents cc cb. We compute their masses and current couplings and find that they are numerically very close to each other coinciding within accuracy of the sum rule method. Therefore, we concentrate on the molecule J/ψBc+ and explore features of this state in a detailed form. Our prediction m=(9740 ± 70)~MeV for its mass means that \mathfrakM easily decays to pairs of ordinary mesons through strong interactions. There are two mechanisms responsible for transformations of \mathfrakM to conventional mesons. The fall-apart mechanism generates the dominant decay channels \mathfrakM → J/ψBc+ and \mathfrakM → ηcBc∗ +. Annihilation of cc quarks triggers subdominant processes with various final-state B and D mesons: Six of such channels are considered in this work. The partial widths all of decays are computed using the three-point sum rule approach. The width Γ[ \mathfrakM]=(121 ± 17)~ MeV of the hadronic axial-vector molecule \mathfrakM, as well as its mass provide valuable information for running and future experiments.