Super-weakly coupled U(1)$_z$ and GeV neutrinos

TL;DR

This paper proposes a unified model extending the Standard Model with a super-weak U(1) gauge symmetry, addressing neutrino masses, dark matter, inflation, and matter-antimatter asymmetry, with implications for GeV-scale sterile neutrinos.

Contribution

It introduces a combined framework with three simple extensions of the Standard Model to explain multiple open questions in particle physics and cosmology.

Findings

Effects on neutrino masses and phenomenology analyzed.

Model can accommodate GeV-scale sterile neutrinos.

Implications for dark matter and cosmic inflation discussed.

Abstract

The $super$-$weak$ force combines three simple extensions of the Standard Model, one in gauge sector, one in fermion sector and one in scalar sector. Each of these extensions are well motivated by their rich phenomenology. Combined to a single framework, they can explain several open questions in particle physics and cosmology: the origin of dark matter, cosmic inflation, matter-antimatter asymmetry, neutrino masses and vacuum stability. We discuss the effects of the model on neutrino masses and phenomenology in the case where the heaviest sterile neutrinos have a GeV scale mass.