Recent developments in radiative B decays

TL;DR

This paper reviews recent theoretical advances in radiative B decays, including QED and QCD corrections, and explores implications for CP asymmetry and CKM parameters, enhancing understanding of flavor physics.

Contribution

It presents new calculations of QED and QCD corrections, analyzes right-handed currents, and discusses CP asymmetries and CKM extraction in radiative B decays.

Findings

QED corrections significantly affect decay observables

NNLO QCD corrections improve theoretical precision

Time-dependent CP asymmetry tests Standard Model

Abstract

We report on recent theoretical progress in radiative B decays. We focus on a calculation of logarithmically enhanced QED corrections to the branching ratio and forward-backward asymmetry in the inclusive rare decay anti-B --> X(s) l+ l-, and present the results of a detailed phenomenological analysis. We also report on the calculation of NNLO QCD corrections to the inclusive decay anti-B --> X(s) gamma. As far as exclusive modes are concerned we consider transversity amplitudes and the impact of right-handed currents in the exclusive anti-B --> K^* l+ l- decay. Finally, we state results for exclusive B --> V gamma decays, notably the time-dependent CP-asymmetry in the exclusive B --> K^* gamma decay and its potential to serve as a so-called ``null test'' of the Standard Model, and the extraction of CKM and unitarity triangle parameters from B --> (rho,omega) gamma and B --> K^* gamma decays.