SU(5) Completion of the Dark Scalar Doublet Model of Radiative Neutrino Mass

TL;DR

This paper extends a radiative neutrino mass model with a scalar doublet and singlet fermions to an SU(5) framework, enabling supersymmetric unification and predicting TeV-scale leptoquarks.

Contribution

It provides the first SU(5) completion of the dark scalar doublet model, integrating it into a grand unified theory with supersymmetry.

Findings

SU(5) completion achieved for the model

Predicted TeV-scale leptoquarks

Supports supersymmetric unification

Abstract

Adding a second scalar doublet (eta^+,eta^0) and three neutral singlet fermions N_{1,2,3} to the Standard Model of particle interactions with a new Z_2 symmetry, it has been shown that eta^0_R or eta^0_I is a good dark-matter candidate and seesaw neutrino masses are generated radiatively. A minimal extension of this new idea is proposed to allow for its SU(5) completion. Supersymmetric unification is then possible, and leptoquarks of a special kind are predicted at the TeV scale.