Speaker
Description
The Belle II experiment has collected 424 fb$^{-1}$ sample of $e^+e^-$ collisions produced by the asymmetric SuperKEKB collider, at a centre-of-mass energy equal to or near the mass of the $\Upsilon(4S)$ resonance. Ninety-percent of the sample is at the $\Upsilon(4S)$ resonance, which decays to $B$-meson pairs. The predecessor experiment, Belle, collected nearly 1~ab$^{-1}$ of data from 1999-2010, three-quarters of which was at the $\Upsilon(4S)$. From these $\Upsilon(4S)$ data, we have made measurements of $B$ decays, $\tau$ decays, charmed baryons decays, etc.
In this talk, I will show some recent results from Belle and Belle II, including
search for lepton-universality violation, first observation of $B\to K\nu\bar{\nu}$, CKM matrix elements, measurements of lepton-universality in semitauonic $B$ decays, $\tau$ decays, etc. In the final, I will show the data taken plan at Belle II.
