Upper limits on branching ratios of $\tau \to \ell \gamma \gamma$ and $\tau \to \ell X$ decays

14 Jul 2021, 17:00
15m
Track I (Zoom)

Track I

Zoom

talk Lepton Flavor and Precision Measurements Lepton Flavor and Precision Measurements

Speaker

Shintaro Ito (KEK)

Description

Searches for charged lepton flavor violation (CLFV) are a probe of new physics beyond the Standard Model. We used existing data to set the first limits on the branching ratio of the CLFV decays $\tau \to \ell \gamma \gamma$ where $\ell=e, \mu$. The decays $\tau \to \ell X$, where $X$ is a weakly interacting boson, were also examined and improved upper bounds were obtained. The results and future prospects will be presented.

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Primary author

Co-authors

Douglas Andrew Bryman (University of British Columbia (CA)) Robert Shrock (Stony Brook University)

Presentation materials