2024/07/20 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 · pdf · doi:10.48550/arxiv.2407.14961
openalex publication_date 2024/07/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Parameters of the heavy four-quark scalar meson T_\mathrmbcb c with content bc bc are calculated by means of the sum rule method. This structure is considered as a diquark-antidiquark state built of scalar diquark and antidiquark components. The mass and current coupling of T_\mathrmbcb c are evaluated in the context of the two-point sum rule approach. The full width of this tetraquark is estimated by taking into account two types of its possible strong decay channels. First class includes dissociation of T_\mathrmbcbc to mesons ηcηb, Bc+Bc-, Bc∗ +Bc∗ - and Bc+(13P0)Bc∗-. Another type of processes are generated by annihilations bb → qq of constituent b-quarks which produces the final-state charmed meson pairs D+D-, D0 D0, D*+D*-, and D*0D*0. Partial width all of these decays are found using the three-point sum rule method which is required to calculate strong couplings at corresponding meson-meson-tetraquark vertices. Predictions obtained for the mass m=(12697 ± 90)~MeV and width Γ[T_\mathrmbcbc ]=(142.4 ± 16.9)~ MeV of this state are compared with alternative results, and are useful for further experimental investigations of fully heavy resonances.