New Physics Interpretations of the B-->K*mu+mu- Anomaly

TL;DR

This paper explores potential new physics explanations for the B-->K*mu+mu- anomaly, including a model-independent analysis and a specific Z' model based on L_mu - L_tau gauge symmetry, to account for observed deviations from the Standard Model.

Contribution

It provides a comprehensive, model-independent analysis of the B-->K*mu+mu- anomaly and introduces a concrete Z' model based on L_mu - L_tau symmetry as a possible explanation.

Findings

Identifies a consistent new physics explanation for the anomaly.

Proposes a Z' model based on L_mu - L_tau gauge symmetry.

Aligns model predictions with experimental observations.

Abstract

This talk discusses possible new physics interpretations of recent experimental results on the B-->K*mu+mu- decay that show a discrepancy with the Standard Model predictions. A model independent analysis that takes into account all the relevant observables in B-->K*mu+mu- and in related b-->s transitions allows to identify a consistent new physics explanation of the discrepancy. An explicit realization in the context of a Z' model is presented. The model is based on the U(1) gauge group associated with the difference between muon- and tau-lepton number, L_mu - L_tau.