Abstract
Parameters of the heavy four-quark scalar meson Tbcb‾c‾ with content bcb‾c‾ 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 Tbcb‾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 Tbcb‾c‾ to mesons ηcηb, Bc+Bc−, Bc⁎+Bc⁎− and Bc+(13P0)Bc⁎−. Another type of processes are generated by annihilations b‾b→q‾q of constituent b-quarks which produces the final-state charmed meson pairs D+D−, D0D‾0, 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[Tbcb‾c‾]=(142.4±16.9)MeV of this state are compared with alternative results, and are useful for further experimental investigations of fully heavy resonances.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
