One Right-handed Neutrino to Generate Complete Neutrino Mass Spectrum in the Framework of NMSSM

TL;DR

This paper proposes a minimal extension of the NMSSM by adding a single right-handed neutrino superfield to generate the complete neutrino mass spectrum, leveraging loop corrections in a supersymmetric framework.

Contribution

It introduces a novel minimal model with one right-handed neutrino in NMSSM to explain neutrino masses, addressing limitations of traditional see-saw mechanisms.

Findings

Single right-handed neutrino suffices for neutrino mass spectrum

Loop corrections contribute significantly to neutrino masses

Model alleviates issues present in MSSM

Abstract

The see-saw mechanism is usually applied to explain the lightness of neutrinos. The traditional see-saw mechanism introduces at least two right-handed neutrinos for the realistic neutrino spectrum. In the case of supersymmetry, loop corrections can also contribute to neutrino masses, which lead to the possibility to generate the neutrino spectrum by introducing just one right-handed neutrino. To be realistic, MSSM suffers from the mu problem and other phenomenological difficulties, so we extend NMSSM (the MSSM with a singlet S) by introducing one single right-handed neutrino superfield (N) and relevant phenomenology is discussed