Rare decays at LHCb

TL;DR

This paper reviews recent LHCb measurements of rare flavor-changing neutral-current decays, testing lepton flavor universality and searching for lepton flavor violation, which could indicate physics beyond the Standard Model.

Contribution

It presents new experimental results on rare B decays, providing insights into potential new physics effects beyond the Standard Model.

Findings

Evidence of deviations from lepton flavor universality

Constraints on new physics models from decay measurements

Improved limits on lepton flavor violation processes

Abstract

Flavour-changing neutral-current processes, such as $b\to s \ell^+\ell^-$, are forbidden at tree level in the Standard Model and hence might receive comparatively large corrections from new particles. This document highlights recent measurements from LHCb on $b\to s \ell^+\ell^-$ and purely-leptonic decays, including tests of lepton flavour universality and searches for lepton flavour violation.