# 2014 CAP Congress / Congrès de l'ACP 2014

15-20 June 2014
Laurentian University / Université Laurentienne
America/Toronto timezone
Welcome to the 2014 CAP Congress! / Bienvenue au congrès de l'ACP 2014!

## Search for the rare B meson decays at the BaBar experiment

16 Jun 2014, 17:00
15m
C-114 (Laurentian University / Université Laurentienne)

### C-114

#### Laurentian University / Université Laurentienne

Sudbury, Ontario
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition) Particle Physics / Physique des particules (PPD)

### Speaker

Ms Racha Cheaib (McGill University)

### Description

Flavour changing neutral current B meson decays, such as $B^{\pm}\to K^{\pm}\tau^{+}\tau^{-}$, are a powerful probe of physics beyond the Standard Model (SM). Comparison of the experimentally measured rate to SM predictions can provide evidence for new physics. Deviations from the SM prediction might arise due to hypothetical heavy particles such as Supersymmetric quarks or bosons or a charged Higgs. Similarly, $B^{\pm}\to K^{\pm}\ell^{+}\ell^{-}$ , where $\ell= e^{+}$ or $\mu^{+}$, has been recently measured by as well as other experiments. The search for $B^{\pm}\to K^{\pm}\tau^+\tau^-$ is specifically interesting, because it involves third-generation leptons, which have greater potential sensitivity to new physics. The search for this rare decay is performed using a sample of 471 million $B{\kern 0.18em\overline{\kern -0.18em B}{}}$, collected with the detector at the PEP-II $e^{+}e^{-}$ collider. The analysis approach is discussed, along with the expected results.

### Primary author

Ms Racha Cheaib (McGill University)

 Slides