ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2002, vol. 65, p. 911031-911035
Search for charmless two-body baryonic decays of B mesons
We report the results of a search for the rare baryonic decays B 0→pp̄, ΛΛ, and B +→pΛ. The analysis is based on a data set of 31.7×10 6 BB̄ events collected by the Belle detector at the KEKB e +e - collider. No statistically significant signals are found, and we set branching fraction upper limits B(B 0→pp̄)<1.2×10 -6, B(B 0→ΛΛ)<1.0×10 6, and B(B +→pΛ)<2.2×10 -6 at the confidence level.