Minimalist Seesaw-Scotogenic Mechanism as a Source for Neutrino Physics

Eduardo Peinado; Abdel Pérez-Lorenzana; Isangel Toledo

Minimalist Seesaw-Scotogenic Mechanism as a Source for Neutrino Physics

High Energy Physics - Phenomenology 2026-07-17 v1

Authors: Eduardo Peinado , Abdel Pérez-Lorenzana , Isangel Toledo

Abstract

We identify the smallest discrete flavor symmetry and minimal field content that can simultaneously account for neutrino masses and the dark sector in the context of the discrete dark matter. Minimality is achieved with a $D_4$ symmetry by adding three right-handed neutrinos and three scalar doublets. Within this framework, tree-level and one-loop contributions yield the observed solar--atmospheric mass splitings as well as the observed neutrino mixings. Furthermore, by including CP-violating phases, the model successfully accommodates both normal and inverted ordering. Spontaneous $D_4$ breaking leaves a residual $\mathbb{Z}_2$ symmetry that stabilizes the dark matter candidate, with a predicted mass within the $50$ -- $200$ GeV range, consistent with LUX-ZEPLIN limits.

Keywords

seesaw-scotogenic mechanism discrete flavor symmetry neutrino masses dark matter D4 symmetry CP-violating phases

Cite

@article{arxiv.2607.16049,
  title  = {Minimalist Seesaw-Scotogenic Mechanism as a Source for Neutrino Physics},
  author = {Eduardo Peinado and Abdel Pérez-Lorenzana and Isangel Toledo},
  journal= {arXiv preprint arXiv:2607.16049},
  year   = {2026}
}