Dirac Leptogenesis in extended nMSSM

TL;DR

This paper proposes a model within an extended nMSSM framework that enables Dirac leptogenesis and naturally small neutrino masses, linking high-scale physics with supersymmetry breaking.

Contribution

It introduces a novel extension of the nMSSM with right-handed neutrinos and heavy Dirac particles that conserves B-L, providing a viable mechanism for Dirac leptogenesis.

Findings

Supports the viability of Dirac leptogenesis in the extended nMSSM

Links high singlet neutrino scale to dynamical supersymmetry breaking

Provides a natural explanation for small Dirac neutrino masses

Abstract

We show that a version of the nearly Minimal Supersymmetric Standard Model (nMSSM), extended only in the singlet sector to include the additional superfields of right-handed neutrinos and very heavy Dirac particles conserving $B-L$, admits a viable scenario for Dirac leptogenesis and naturally small Dirac neutrino masses. The origin of the ($B-L$)-conserving high singlet neutrino scale and the desired supersymmetry breaking terms is associated with dynamical supersymmetry breaking in the hidden sector.