Leptogenesis in a perturbative SO(10) model

TL;DR

This paper explores a perturbative SO(10) grand unification model capable of fitting fermion masses and mixings, predicting right-handed neutrino physics, leptogenesis, and proton decay, with one model aligning with all experimental data.

Contribution

It introduces two viable SO(10) models that fit fermion data and predict neutrino-related phenomena, with one model consistent with all current experimental constraints.

Findings

Model 2 is consistent with all experimental constraints.

The models successfully reproduce charged fermion masses and mixings.

Predictions for leptogenesis and proton decay are derived.

Abstract

We consider a phenomenologically viable SO(10) grand unification model which allows perturbative calculations up to the Planck scale or the string scale. We use a set of Higgs superfields {10 + 16bar + 16 + 45}. In this framework, the data fitting of the charged fermion mass matrices is re-examined. This model can indeed reproduce the low-energy experimental data relating the charged fermion masses and mixings. As for the neutrino sector, we take the neutrino oscillation data as input data to construct right-handed Majorana neutrino mass matrix and get a prediction for the physics related to the right-handed neutrinos, e.g. the leptogenesis and for the proton decay. We propose two kinds of phenomenologically viable model, quoted as Model 1 and Model 2. We show that one of the models (Model 2) is consistent with all experimental constraints.