Speaker
Mr
Robert Seddon
(McGill University)
Description
The decay $B^-$ $\rightarrow\Lambda\bar{p}\nu\bar{\nu}$ is a semileptonic, flavour-changing-neutral-current decay. It proceeds exclusively through one-loop box and penguin diagrams and is therefore expected to be heavily suppressed ("rare") within the context of the Standard Model (SM) with a predicted branching fraction of $(7.9 \pm 1.9) \times 10^{-7}$. The possibility of new physics particles contributing in the quantum loops make this decay a very sensitive probe for beyond-SM physics, as any deviation from the predicted decay processes will noticeably affect the suppressed branching fraction. Using data from the BaBar experiment, this analysis aims to establish the first experimentally measured branching fraction limit for this process. In this talk I will describe the experimental and analytical techniques used in this research and present preliminary results.
Primary author
Mr
Robert Seddon
(McGill University)
