Tiny neutrino mass from SUSY and lepton number breaking sector

TL;DR

This paper proposes a novel supersymmetric framework where lepton number is broken via the SUSY breaking sector, leading to natural radiative neutrino mass generation and new models including pseudo-Dirac and Majorana neutrinos.

Contribution

It introduces a new SUSY setup with lepton number breaking in the spurion F-term, enabling natural neutrino mass models and applications to existing SUSY neutrino models.

Findings

New SUSY lepton number breaking setup modifies sparticle spectra.

Two novel neutrino mass models: pseudo-Dirac and Majorana.

Application to the supersymmetric Zee-Babu model.

Abstract

We suggest new setup where SUSY breaking spurion F-term possesses lepton number. This setup not only modifies sparticle mass spectra but also realizes several new models, where neutrino mass is naturally induced through radiative corrections. We here suggest two new models; the first one is (i): pseudo-Dirac/Schizophrenic neutrino model, and the second one is (ii): pure Majorana neutrino model. We will also show this setup can naturally apply to the supersymmetric Zee-Babu model.