Higgs lepton flavor violating decays in Two Higgs Doublet Models

TL;DR

This paper reviews the potential for observing lepton flavor violating Higgs decays, specifically into tau and muon, within Two Higgs Doublet Models, highlighting their compatibility with current experimental constraints.

Contribution

It demonstrates that Two Higgs Doublet Models can produce sizable lepton flavor violating Higgs decays while remaining consistent with existing experimental limits.

Findings

Large flavor violating rates are possible in the model.

Compatibility with current experimental bounds is maintained.

Potential signals could be detectable in future experiments.

Abstract

The discovery of a non-zero rate for a lepton flavor violating decay mode of the Higgs boson would definitely be an indication of New Physics. We review the prospects for such signal in Two Higgs Doublet Models, in particular for Higgs boson decays into $\tau \mu$ final states. We will show that this scenario contains all the necessary ingredients to provide large flavor violating rates and still be compatible with the stringent limits from direct searches and low-energy flavor experiments.