Abstract
After the discovery of the double-charm baryon Xi _{cc}^{++} by LHCb, one of the most important topics is to search for the bottom-charm baryons which contain a b quark, a c quark and a light quark. In this work, we study the two-body non-leptonic weak decays of a bottom-charm baryon into a spin-1/2 bottomed baryon and a light pseudoscalar meson with the short-distance contributions calculated under the factorization hypothesis and the long-distance contributions considering the final-state-interaction effects. The branching fractions of all fifty-seven decay channels are estimated. The results indicate that Xi _{bc}^+rightarrow Xi _b^0pi ^+, Xi _{bc}^{0}rightarrow Xi _{b}^{-}pi ^+ and Omega _{bc}^0rightarrow Omega _b^-pi ^+ decay modes have relatively large decay rates and thus could be used to experimentally search for the bottom-charm baryons. The topological diagrams and the SU(3) symmetry of bottom-charm baryon decays are discussed.
Highlights
The recent discovery of the double-charm baryon bottom-charm baryons (Bbc = +bc, 0 bc or ).The heavy diquark core of bc could be somewhere different from that of cc.The theoretical predictions on the branching fractions of weak decays of the bottom-charm baryons are very helpful for the experimental searches, analogous to the case of the observation of the double-charm baryon
++ cc via the processes predicted by the above theoretical framework manifests that it is reliable for charm decays of double-heavy baryons
This method has been systematically used to study the decays of double-charm baryon (Bcc) into one charmed baryon and one pseudoscalar meson (Bc P) [8], one charmed baryon and one vector meson (BcV ) [40], and one light octet baryon and one charmed meson (B D(∗)) [41]
Summary
In this work, we will study the charm decays of the Bbc baryons in order to point out the most favorable modes for experimental searches. ++ cc via the processes predicted by the above theoretical framework manifests that it is reliable for charm decays of double-heavy baryons. This method has been systematically used to study the decays of double-charm baryon (Bcc) into one charmed baryon and one pseudoscalar meson (Bc P) [8], one charmed baryon and one vector meson (BcV ) [40], and one light octet baryon and one charmed meson (B D(∗)) [41].
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