Abstract
We study the interaction of the doubly bottom systems , , , , , , , , , by means of vector meson exchange with Lagrangians from an extension of the local hidden gauge approach. The full s-wave scattering matrix is obtained implementing unitarity in coupled channels by means of the Bethe-Salpeter equation. We find poles below the channel thresholds for the attractively interacting channels in , in , in , and in , all of them with . For these cases the widths are evaluated identifying the dominant source of imaginary part. We find binding energies of the order of 10–20 MeV, and the widths vary much from one system to the other: of the order of 10–100 eV for the system and , about 6 MeV for the system and of the order of 0.5 MeV for the system.
3 More- Received 27 January 2022
- Accepted 28 March 2022
DOI:https://doi.org/10.1103/PhysRevD.105.074017
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society