Rare decays at LHCb

TL;DR

This paper reviews recent LHCb results on rare decays, which are sensitive to new physics beyond the Standard Model, highlighting mostly consistent findings with some tensions in specific decay channels.

Contribution

It summarizes the latest experimental measurements of rare decays at LHCb, including potential deviations from Standard Model predictions in semileptonic b→sℓ+ℓ− decays.

Findings

Most results agree with Standard Model

Some tensions observed in semileptonic b→sℓ+ℓ− decays

Highlights sensitivity of rare decays to new physics

Abstract

Rare decays are flavour changing neutral current processes that are loop-suppressed in the Standard Model (SM). New particles in SM extensions can therefore give significant contributions, modifying branching fractions and angular distributions. Consequently, rare decays are particularly sensitive probes for New Physics (NP). These proceedings summarize the latest results from the LHCb experiment on rare decays. While most results are in good agreement with SM predictions, some tensions that recently appeared in rare semileptonic $b\to s\ell^+\ell^-$ decays are also discussed.