Status of rare exclusive $B$ meson decays in 2018

TL;DR

This paper reviews the experimental and theoretical status of rare $B$ meson decays as of early 2018, highlighting observed anomalies and discussing potential implications for New Physics beyond the Standard Model.

Contribution

It provides a comprehensive overview of recent experimental results, anomalies, and theoretical interpretations related to rare $B$ meson decays as of 2018.

Findings

Observed anomalies in flavour observables

Discussion of lepton flavour universality violations

Potential New Physics interpretations

Abstract

This review discusses the present experimental and theoretical status of rare flavour-changing neutral current $b$-quark decays at the begin of 2018. It includes a discussion of the experimental situation and details of the currently observed anomalies in measurements of flavour observables, including lepton flavour universality. Progress on the theory side, within and beyond the Standard Model theory is also discussed, together with potential New Physics interpretations of the present measurements.