Search for B{sup 0}{yields}{lambda}{sub c}{sup +}{lambda}{sub c}{sup -} decay at Belle
- Graduate University for Advanced Studies, Hayama (Japan)
- High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
We search for the doubly charmed baryonic decay B{sup 0}{yields}{lambda}{sub c}{sup +}{lambda}{sub c}{sup -}, in a data sample of 520x10{sup 6} BB events accumulated at the {upsilon}(4S) resonance with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. We find no significant signal and set an upper limit of B(B{sup 0}{yields}{lambda}{sub c}{sup +}{lambda}{sub c}{sup -})<6.2x10{sup -5} at 90% confidence level. The result is significantly below a naive extrapolation from B(B{sup -}{yields}{xi}{sub c}{sup 0}{lambda}{sub c}{sup -}) assuming a simple Cabibbo-suppression factor of |V{sub cd}/V{sub cs}|{sup 2}. The small branching fraction may be attributed to a suppression due to the large momentum of the baryonic decay products, which has been observed in other charmed baryonic two-body B decays.
- OSTI ID:
- 21249673
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 77, Issue 5; Other Information: DOI: 10.1103/PhysRevD.77.051101; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Observation of B{sup +}{yields}{lambda}{sub c}{sup +}{lambda}{sub c}{sup -}K{sup +} and B{sup 0}{yields}{lambda}{sub c}{sup +}{lambda}{sub c}{sup -}K{sup 0} Decays
Measurements of B(B{sup 0}{yields}{lambda}{sub c}{sup +}p) and B(B{sup -}{yields}{lambda}{sub c}{sup +}p{pi}{sup -}) and studies of {lambda}{sub c}{sup +}{pi}{sup -} resonances