Rare $B^{-}\to \Lambda \bar{p}\nu \bar{\nu }$ decay

C. Q. Geng, Y. K. Hsiao

We study the four-body semileptonic baryonic decay of $B^{-}\to \Lambda \bar{p}\nu \bar{\nu }$ in the standard model. We find that the decay branching ratio is $(7.9\pm 1.9)\times 10^{-7}$. Similar…