Speaker
Laura Salutari
(Istituto Nazionale di Fisica Nucleare)
Description
The Belle and Belle II experiments have collected a 1.6 ab$^{−1}$ sample of $e^+e^-$ collision data at center-of-mass energy near the $\Upsilon(nS)$ resonances. This sample contains approximately 1.5 billion $e^+e^- \to \tau^+ \tau^-$ events, which we use to search for lepton-flavour violating decays. We present searches for $\tau \to l \gamma$, tau decays into three leptons, $\tau^- \to K_S^0 l^- $ and $\tau^- \to l^- \alpha$ where $\alpha$ is an invisible scalar particle.
Primary author
Laura Salutari
(Istituto Nazionale di Fisica Nucleare)
