Radiative/EW penguin decays at Belle

TL;DR

This paper reports recent measurements of radiative and electroweak penguin decays of B mesons at Belle, including differential branching fractions, asymmetries, polarization, and specific decay modes, providing insights into flavor physics and potential new physics effects.

Contribution

It provides new experimental results on B meson penguin decays, including differential distributions and branching fractions, enhancing understanding of rare decay processes and testing the Standard Model.

Findings

Measured differential branching fractions and asymmetries for B→K(*)ll decays.

Reported branching fractions for inclusive B→Xsγ and exclusive B→Kη'γ modes.

Analyzed polarization and forward-backward asymmetry as functions of q².

Abstract

We present recent results for radiative and electroweak penguin decays of $B$ me son at Belle. Measurements of differential branching fraction, isospin asymmetr y, $K^*$ polarization, and forward-backward asymmetry as functions of $q^2$ for $B \to K^{(*)}ll$ decays are reported. For the results of the radiative process, we report measurements of branching fractions for inclusive $B\to X_s \gamma$ and the exclusive $B\to K \eta' \gamma$ modes.