Type II see-saw dominance in SO(10)

TL;DR

This paper investigates how a dominant Type II seesaw mechanism can be realized in supersymmetric SO(10) models, linking neutrino masses with charged fermion sectors without extra fields, and explores its physical implications.

Contribution

It demonstrates a way to achieve Type II seesaw dominance in SO(10) models using only minimal symmetry-breaking fields, without additional particles.

Findings

Type II seesaw can dominate in SO(10) with 54 and 45-dimensional representations.

The model allows for baryogenesis and leptogenesis mechanisms.

Type II see-saw fields can act as messengers of supersymmetry breaking.

Abstract

Grand unified theories where the neutrino mass is given by Type II seesaw have the potential to provide interesting connections between the neutrino and charged fermion sectors. We explore the possibility of having a dominant Type II seesaw contribution in supersymmetric SO(10). We show that this can be achieved in the model where symmetry breaking is triggered by 54 and 45-dimensional representations, without the need for additional fields other than those already required to have a realistic charged fermion mass spectrum. Physical consequences, such as the implementation of the BSV mechanism, the possibility of the fields responsible for Type II see-saw dominance being messengers of supersymmetry breaking, and the realization of baryo and leptogenesis in this theories are discussed.