Flavour anomalies in $B$ decays at LHCb

TL;DR

This paper reviews flavour anomalies observed in B decays at LHCb, highlighting their potential as indirect indicators of physics beyond the Standard Model despite the lack of direct detection of new particles.

Contribution

It provides a comprehensive overview of current flavour anomaly patterns in B decays and discusses their implications for indirect BSM physics searches.

Findings

Observation of systematic flavour anomalies in B decays.

Patterns suggest potential new physics signals.

Anomalies are intriguing but not yet individually significant.

Abstract

The direct searches for Beyond Standard Model (BSM) particles have been constraining their mass scale to the extent where it is now becoming consensual that such particles are likely to be above the energy reach of the LHC. Meanwhile, the studies of indirect probes of BSM physics, with all their diversity, have been progressing both in accurracy and in setting up observables with reduced theoretical uncertainties. The observation of flavour anomalies in $b$ hadron decays represents an important part of the program of indirect detection of BSM physics. Several benchmark analyses involving leptonic or semileptonic decays are presented, with an emphasis on intriguing patterns which are systematic in their trend, though not individually significant yet.