Implications of LHCb Data for Lepton Flavour Universality Violation

TL;DR

This paper investigates the implications of LHCb data on potential violations of lepton flavor universality in rare B-decays, using a model-independent approach and projecting future discoveries with Run 3 data.

Contribution

It provides a comprehensive, model-independent analysis of $b o s$ observables, compares new physics explanations with hadronic effects, and offers projections for future LHCb measurements.

Findings

LHCb data suggests possible lepton non-universality.

Future Run 3 data could confirm lepton flavor violation with a single observable.

Global fits indicate specific Wilson coefficients are favored by the data.

Abstract

We analyse the new physics implications of theoretically clean $b \to s$ observables in a model-independent approach and compare their coherence with the implications of other rare $B$-decays. A statistical comparison is done between the New Physics explanation and hadronic contributions as the source of the anomalies in angular observables of the $B\to K^*\mu\mu$ decay. We make projections for future measurements that indicate that LHCb will be in the position to discover lepton non-universality via a single observable using the Run 3 data. The global fit of rare $B$-decays is given within a multidimensional fit involving all the 20 relevant Wilson coefficients.