Speaker
Mr
Christian Oswald
(Universität Bonn)
Description
We present a search for the four-body semileptonic baryonic decay $B^-\to p\bar p\ell^-\bar\nu_\ell$ ($\ell=e,\ \mu$) based on a data sample of 772 million $B\bar B$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy electron-positron collider. In this study, a new neural-network based hadronic $B$-meson tagging method is applied. The theoretical expectation of the decay branching fraction is $\sim 1\times 10^{-4}$, which is within the experimental sensitivity of this search.
Primary author
Mr
Christian Oswald
(Universität Bonn)
