Speaker
Dr
Marcela Garcia
(KEK)
Description
The rates of lepton-flavour violation in charged lepton decays are enhanced in many beyond-the-standard-model theories. During the first run of the Belle II experiment 365 fb$^{-1}$ of $e^{+}e^{-}$ collision data was collected at a centre-of-mass energy corresponding to the $\Upsilon(4S)$ resonance. This dataset contains around 340 million $e^{+}e^{-} \rightarrow \tau^{+}\tau^{-}$ events with constrained kinematics and low backgrounds, providing an ideal environment to search for a wide variety of lepton-flavour violating (LFV) $\tau$ decays. One of the golden channels for $\tau$ LFV is $\tau\to\mu\gamma$ and in this talk we present the first search for this decay at Belle II.
Author
Dr
Marcela Garcia
(KEK)
