Leptons in Composite MFV

TL;DR

This paper explores lepton flavor violation in composite Higgs models, proposing MFV scenarios that align with experimental constraints and predicting potentially detectable signatures at the LHC.

Contribution

It introduces MFV frameworks with equal left or right-handed lepton compositeness, resolving flavor violation issues in composite Higgs models.

Findings

MFV scenarios relax constraints on lepton compositeness

Composite lepton partners could be as light as a few hundred GeV

Potential observable effects in muon g-2 and LHC signatures

Abstract

We study the lepton sector of composite Higgs models with partial compositeness. The standard anarchic scenario is in conflict with the absence of observable charged lepton flavor violation. This tension can be completely solved in MFV scenarios that require either left-handed or right-handed SM leptons to be equally composite. Constraints on this scenario are weak and the composite lepton partners could be as light as few hundreds GeVs with interesting LHC signatures. The contribution to the muon (g-2) in theories where the Higgs is a pseudo Nambu-Goldstone boson is also discussed.