Intuitive

The basic idea of Leptogenesis is that the baryon-antibaryon asymmetry that we observe was produced through a lepton-antilepton asymmetry. This asymmetry, in turn, was produced, for example, through the decay of right-handed neutrinos.

The lepton asymmetry gets converted into a baryon asymmetry through vacuum tunneling processes known as sphalerons.

Concrete

• A great straight-forward introduction is Leptogenesis: A Pedagogical Introduction by Yosef Nir

Abstract

Why is it interesting?

Leptogenesis is a possible solution for the baryon asymmetry problem of the standard model.