Numerical study of leptogenesis in a 5D split fermion model with bulk neutrinos

TL;DR

This paper numerically investigates a 5D split fermion model with bulk neutrinos, identifying parameter regions capable of generating the observed baryon asymmetry through leptogenesis, emphasizing the importance of higher order Yukawa terms.

Contribution

It introduces a numerical analysis of leptogenesis in a 5D split fermion model with bulk neutrinos, highlighting the necessity of higher order Yukawa terms for CP violation.

Findings

Higher order Yukawa terms are essential for sufficient CP violation.

The model can produce the observed baryon asymmetry within certain parameter regions.

Numerical Monte Carlo analysis identifies viable parameter space for leptogenesis.

Abstract

We study numerically a 5D hybrid model which incorporates a split fermion scenario and bulk neutrinos. We perform a Monte Carlo analysis of the model in order to find the regions in the parameter space allowing for realization of the leptogenesis. We find that higher order Yukawa terms must be included in order the model to produce a CP violation and net baryon number sufficient for the creation of the observed baryon asymmetry of the Universe.