Belle Results on b --> s ell+ ell- and b --> gamma

TL;DR

This paper reports on Belle experiment results concerning rare B meson decays involving electroweak and radiative processes, providing new constraints on physics beyond the Standard Model and CKM matrix elements.

Contribution

It presents the first measurement of the inclusive B --> X(s) ell+ ell- decay rate and discusses future measurements that could constrain fundamental parameters.

Findings

First measurement of inclusive B --> X(s) ell+ ell- rate

Constraints on physics beyond the Standard Model

Future prospects for measuring B --> rho gamma

Abstract

We discuss the latest results and future prospects of the Belle experiment on the electroweak and radiative processes b --> s ell+ ell-, b --> s gamma and b --> d gamma. In particular, the first measurement of the inclusive rate for B --> X(s) ell+ ell- provides a new constraint on the physics beyond the Standard Model. The yet to be measured decay B --> rho gamma is expected to provide a new constraint on the CKM matrix element |V(td)| in the near future.