Supersymmetric U(1) Gauge Realization of the Dark Scalar Doublet Model of Radiative Neutrino Mass

TL;DR

This paper proposes a supersymmetric U(1) gauge extension of a model where a second scalar doublet and neutral fermions generate neutrino masses radiatively and provide dark matter candidates, with Z_2 symmetry emerging naturally.

Contribution

It introduces a supersymmetric U(1) gauge framework that enforces R parity and naturally produces the Z_2 symmetry responsible for dark matter stability.

Findings

Dark matter candidate from scalar doublet components

Radiative neutrino mass generation mechanism

Emergence of Z_2 symmetry as a discrete remnant

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 Re(eta^0) or Im(eta^0) is a good dark-matter candidate and seesaw neutrino masses are generated radiatively. A supersymmetric U(1) gauge extension of this new idea is proposed, which enforces the usual R parity of the Minimal Supersymmetric Standard Model, and allows this new Z_2 symmetry to emerge as a discrete remnant.