Speaker
Description
The Belle and Belle$~$II experiments have collected a 1.1$~$ab$^{-1}$ sample of $e^+ e^-\to B\bar{B}$ collisions at the $\Upsilon(4S)$ resonance. These data, with low particle multiplicity and constrained initial state kinematics, are an ideal environment to search for rare $B$ meson decays proceeding via electroweak and radiative penguin processes. Results include those of the decay $B^+\to K^+\nu\bar{\nu}$ using an inclusive tagging technique. We also present results on radiative decays $B^0\to \gamma\gamma$, $B\to \rho\gamma$ and $B\to K^{*}\gamma$. $C\!P$ and isospin asymmetries are presented for the latter two decays. We also present results from decays related to $b\to s\ell^+\ell^-$ and $b\to d\ell^+\ell^-$ transitions, where $\ell$ is an electron or muon.
