Leptogenesis, dark matter and neutrino masses

TL;DR

This paper reviews how sterile neutrinos could simultaneously explain neutrino masses, dark matter, and the universe's matter-antimatter asymmetry, discussing two main theoretical models.

Contribution

It compares two models, the $ u$MSM and Inverse Seesaw, for implementing sterile neutrinos to address key cosmological and particle physics issues.

Findings

Sterile neutrinos can potentially explain neutrino masses, dark matter, and baryon asymmetry.

The $ u$MSM and Inverse Seesaw are viable frameworks for sterile neutrino implementation.

Further research is needed to confirm these models' consistency with observations.

Abstract

We review the viability of the sterile neutrino hypothesis in accounting for three observational problems of the Standard Model of particle physics: neutrino masses and lepton mixing, dark matter and the baryon asymmetry of the Universe. We present two alternative scenarios for the implementation of the sterile fermion hypothesis: the $\nu$MSM and the Inverse Seesaw.