We study the doubly-charmed baryonic B decays B → Ξc Λc and B → Λc+ Λc- K, recently observed by Belle. We find that the unexpected large branching ratios (BRs) could be ascribed to the final state interactions (FSIs), which are dictated by B → D Ds+ → Ξc Λc+ and B → over(D, ̄)0 D0 K → Λc+ Λc- K. By utilizing the same mechanism, we predict that the BRs for B+ → over(Ξ, ̄)c0 Σc+ and B+ → Σc∓ Λc± K+ decays could be as large as BR (B+ → over(Ξ, ̄)c0 Λc+) and 10-4, respectively. In addition, extending the FSIs to the processes associated with the creation of the s over(s, ̄) pair, BR (B+ → over(Ω, ̄)c Ξc+) at percent level is achievable.
|Number of pages||7|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 2006 Jul 6|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics