Neutrino masses in a two Higgs doublet model with a U(1) gauge symmetry
Daniel Camargo (International Institute of Physics, Universidade Federal do Rio Grande do Norte, Campus Universitario, Lagoa Nova, Natal, RN, 59078-970, Brazil); Alex Dias (Universidade Federal do ABC, Centro de Ciências Naturais e Humanas, Santo André, SP, Brazil); Téssio Melo (International Institute of Physics, Universidade Federal do Rio Grande do Norte, Campus Universitario, Lagoa Nova, Natal, RN, 59078-970, Brazil, Departamento de Física, Universidade Federal da Paraíba, João Pessoa, PB, 58051-970, Brazil); Farinaldo Queiroz (International Institute of Physics, Universidade Federal do Rio Grande do Norte, Campus Universitario, Lagoa Nova, Natal, RN, 59078-970, Brazil)
General Two Higgs Doublet Models (2HDM) are popular Standard Model extensions but feature flavor changing interactions and lack neutrino masses. We discuss a 2HDM where neutrino masses are generated via type I seesaw and propose an extension where neutrino masses are generated via a type II seesaw mechanism with flavor changing interactions being absent via the presence of a U(1) gauge symmetry. After considering a variety of bounds such as those rising from collider and electroweak precision we show that our proposal stands as a UV complete 2HDM with a dark photon where neutrino masses and flavor changing interactions are addressed. A possible dark matter realization is also discussed.
