CharmlessBdecays involving baryons

Predictions are made for the fraction of B-meson decays involving specific final states of NN{}+n{π} (n{≥}0), as functions of (a) decay dynamics, (b) models for multipion production, (c) the isospin of the final state, and (d) the ratio {}Vbu/Vbc{} of Kobayashi-Maskawa matrix elements. From recent observations of B⁺{→}pp{}π⁺(+c.c.) and B⁰{→}pp{}π⁺{{π}}^{{{-}}}by the ARGUS Collaboration, it is concluded that{V}bu$/${V}bc${}{}0.08, similar to the ARGUS Collaboration's own estimate of 0.07. However, a more likely value for this ratio is near its present experimental upper limit. Predictions are made for further final states in NN{}+n{π} and in other charmless B decays. We also comment briefly on prospects for observing CP violation in B{→}NN{}+n{π}.