# Leptogenesis after Inflation in a Pati-Salam Model

## TL;DR

This paper presents a supersymmetric Pati-Salam model that unifies fermion masses, inflation, and baryogenesis, aligning with current cosmological and particle physics data, and explaining the observed matter-antimatter asymmetry.

## Contribution

It introduces a comprehensive Pati-Salam model integrating fermion mass fitting, inflation consistent with recent data, and baryogenesis via leptogenesis with instant preheating effects.

## Key findings

- Model fits low energy fermion data
- Inflation scale matches symmetry breaking scale
- Reproduces observed baryon-to-entropy ratio

## Abstract

In this talk I discuss a supersymmetric Pati-Salam model of fermion masses and mixing angles which fits low energy data. The model is then extended to include an inflationary sector which is shown to be consistent with Bicep2-Keck-Planck data. The energy scale during inflation is associated with the PS symmetry breaking scale. Finally, the model is shown to be consistent with the observed baryon-to-entropy ratio necessary for Big Bang Nucleosynthesis. It turns out that only the heaviest right-handed neutrino decays produce the correct sign of the baryon-to-entropy ratio. Nevertheless, we obtain the observed value due to the process of instant preheating.