4-11 July 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

Semileptonic B/Bs decays at Belle

5 Jul 2012, 10:30
Room 220 (Melbourne Convention and Exhibition Centre)

Room 220

Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 5 - B-Physics TR5 & TR7 - Room 220 - B Physics and CP Violation, etc.


Mr Christian Oswald (Universität Bonn)


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)

Presentation materials