1204.4771 (C. Q. Geng et al.)

Rare $B^-\toΛ\bar{p}ν\barν$ decay    [PDF]

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 to the rare decays of $B^-\to K^{(*)-}\nu\bar \nu$, this baryonic decay of $B^-\to \Lambda\bar p\nu\bar \nu$ is also sensitive to new physics and accessible to the future $B$ factories.

View original: http://arxiv.org/abs/1204.4771