Probes of lepton flavor symmetry and violation with top quarks in ATLAS and CMS

TL;DR

This paper reviews recent ATLAS and CMS measurements of lepton flavor universality and searches for charged lepton flavor violation using top quark data from the LHC, providing insights into potential new physics beyond the Standard Model.

Contribution

It presents the latest experimental results from ATLAS and CMS on LFU and cLFV involving top quarks, utilizing the full Run2 dataset at 13 TeV.

Findings

No significant deviations from Standard Model predictions found.

Improved limits set on charged lepton flavor violation processes.

Enhanced precision in lepton flavor universality measurements.

Abstract

Measurements of lepton flavor universality (LFU) and searches for charged lepton flavor violation (cLFV) are one of the most straightforward ways of searching for Beyond Standard Model (BSM) physics. The numerous production of top quark pairs at the LHC allows for high precision measurements of LFU ratios and searches for cLFV signatures. Results of the recent measurements and searches from the ATLAS and CMS collaborations using the Run2 dataset with an integrated luminosity of up to 139 $\mathrm{fb}^{-1}$ at center of mass energy of 13 TeV are presented.