Searches for Lepton Flavour Violation at ATLAS and CMS

TL;DR

This paper reviews recent searches for lepton flavour violation and universality violation at ATLAS and CMS, exploring various BSM models through proton-proton collision data at 13 TeV.

Contribution

It provides a comprehensive overview of recent experimental efforts and results in searching for LFV and LFUV phenomena at the LHC.

Findings

Constraints on leptoquark models

Limits on heavy neutral leptons

Measurements of $R(K)$ and $R(J/\Psi)$

Abstract

Lepton flavour violation (LFV), and lepton flavour university violation (LFUV), are striking signatures of beyond the Standard Model (BSM) physics. Recent searches for these at the ATLAS and CMS experiments are presented, using proton-proton collisions with a centre of mass energy of 13 TeV. A range of models and signatures are considered, including leptoquarks, heavy neutral leptons, LFV in $\tau$ lepton decays, and new measurements of $R(K)$ and $R(J/\Psi)$.