# Common origin of baryon asymmetry, dark matter and neutrino mass

## TL;DR

This paper presents a unified model explaining neutrino masses, baryon asymmetry, and dark matter using two right-handed neutrinos, linking their origins through CP violation and predicting dark matter detection prospects.

## Contribution

It introduces a minimal model with two right-handed neutrinos that simultaneously accounts for neutrino masses, baryon asymmetry, and dark matter, connecting their origins via CP violation.

## Key findings

- Neutrino masses generated by Type-I seesaw with two RH neutrinos.
- Baryon asymmetry produced through thermal leptogenesis from RH neutrino decay.
- Dark matter as an asymmetric component linked to RH neutrino decay, with predicted detection signals.

## Abstract

In this work, we explain three beyond standard model (BSM) phenomena, namely neutrino masses, the baryon asymmetry of the Universe and Dark Matter, within a single model and in each explanation the right handed (RH) neutrinos play the prime role. Indeed by just introducing two RH neutrinos we can generate the neutrino masses by the Type-I seesaw mechanism. The baryon asymmetry of the Universe can arise from thermal leptogenesis from the decay of lightest RH neutrino before the decoupling of the electroweak sphaleron transitions, which redistribute the $ B-L $ number into a baryon number. At the same time, the decay of the RH neutrino can produce the Dark Matter (DM) as an asymmetric Dark Matter component. The source of CP violation in the two sectors is exactly the same, related to the complex couplings of the neutrinos. By determining the comoving number density for different values of the CP violation in the DM sector, we obtain a particular value of the DM mass after satisfying the relic density bound. We also give prediction for the DM direct detection (DD) in the near future by different ongoing DD experiments.