Measurements of radiative and electroweak penguin B decays at Belle and Belle II

Sumitted to PubDB: 2024-05-27

Category: Talk, Visibility: Latest Version Public

Tags:

Authors	Debjit Ghosh
Date	2024-05-11
Belle II Number	BELLE2-TALK-DRAFT-2024-069
Abstract	The Belle and Belle II experiments have collected a $1.1 \mathrm{ab}^{-1}$ sample of $e^{+} e^{-} \rightarrow B \bar{B}$ collisions at the $\Upsilon(4 S)$ 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 $B^{+} \rightarrow K^{+} \nu \bar{\nu}$ using an inclusive tagging technique. We also present results on radiative decays $B^0 \rightarrow \gamma \gamma, B \rightarrow \rho \gamma$ and $B \rightarrow K^* \gamma . C P$ and isospin asymmetries are presented for the latter two decays. We also present results from decays related to $b \rightarrow s \ell^{+} \ell^{-}$and $b \rightarrow d \ell^{+} \ell^{-}$ transitions, where $\ell$ is an electron or muon.
Conference	FPCP 2024