Diagnosing New Physics with LUV and LFV B Decays

TL;DR

This paper explores how violations of lepton universality in B decays can signal new physics beyond the standard model, and discusses methods to detect related lepton flavor violation through specific decay processes.

Contribution

It proposes new ways to probe lepton universality violation and its connection to lepton flavor violation in B decays, highlighting promising decay channels for future searches.

Findings

Lepton universality violation can be linked to new physics signals.

Certain B decay channels are promising for detecting lepton flavor violation.

The paper discusses how to use decay distributions to identify new physics evidence.

Abstract

An important prediction of the standard model is the universality of the gauge interactions of the three generation of charged leptons. Violation of this universality would be a clean evidence of new physics (NP) beyond the standard model. In recent times anomalies in measurements of certain $B$ decays indicate violation of lepton universality (LUV). I will discuss how one may probe this LUV new physics via related decays and distributions. I will point out that LUV new physics can often lead to lepton flavor violation (LFV) and I will discuss some promising decays to look for LFV new physics.