ICHEP2012

Semileptonic B/Bs decays at Belle

5 Jul 2012, 10:30

15m

Room 220 (Melbourne Convention and Exhibition Centre)

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

Speaker

Mr Christian Oswald (Universität Bonn)

Description

We present a search for the four-body semileptonic baryonic decay $B^{-}\to p\overline{p}{\ell }^{-}{\overline{\nu }}_{\ell }$ ($\ell =e,\mu$) based on a data sample of 772 million $B\overline{B}$ pairs collected at the $\mathrm{{\rm Y}}(4S)$ 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.

Presentation materials

Slides

20120705_semilep_belle_oswald.pdf