A Classification and Analysis of Higgs-flavor Models

TL;DR

This paper classifies Higgs-flavor models based on non-abelian symmetries, analyzing how different symmetry groups and representations influence the spectra, mass relations, and potential dark matter candidates of multiple Higgs doublets.

Contribution

It provides a systematic classification of Higgs-flavor models and explores the resulting phenomenological spectra and dark matter implications.

Findings

Distinct spectra of extra Higgs doublets for different symmetries

Variations in mass relations and SU(2)_L-breaking splittings

Identification of inert Higgs as dark matter candidates

Abstract

A classification is given of Higgs-flavor models. In these models, there are several Higgs doublets in an irreducible multiplet R_{Phi} of a non-abelian symmetry G_{Phi}, under which the quarks and leptons do not transform (thus giving minimal flavor-changing for the fermions). It is found that different G_{Phi} and R_{Phi} lead to very distinctive spectra of the extra Higgs doublets, including different numbers of "sequential Higgs" and of "inert Higgs" that could play the role of dark matter, different mass relations, and different patterns of SU(2)_L-breaking splittings within the Higgs doublets.