What question did this study set out to answer?

This research investigates lepton flavor universality and flavor violation using top quarks at the LHC.

March 26, 2026Open Access

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

Key Points

This research investigates lepton flavor universality and flavor violation using top quarks at the LHC.
Conducted measurements of lepton flavor universality ratios
Performed searches for charged lepton flavor violation
Utilized data from ATLAS and CMS collaborations
Analyzed Run2 dataset with integrated luminosity up to 139 fb−1
Tested at a center of mass energy of 13 TeV
Results indicate precise measurements of lepton flavor universality ratios
No significant charged lepton flavor violation signatures were found
Analyzed data provides constraints on Beyond Standard Model physics
Measurements enhance understanding of top quark behavior in relation to lepton flavors

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 1 and CMS 2 collaborations using the Run2 dataset with an integrated luminosity of up to 139 fb − 1 at center of mass energy of 13 TeV are presented.

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

Key Points

Abstract

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