Leptogenesis in the Universe
Abstract
Leptogenesis is a class of scenarios in which the cosmic baryon asymmetry originates from an initial lepton asymmetry generated in the decays of heavy sterile neutrinos in the early Universe. We explain why leptogenesis is an appealing mechanism for baryogenesis. We review its motivations, the basic ingredients, and describe subclasses of effects, like those of lepton flavours, spectator processes, scatterings, finite temperature corrections, the role of the heavier sterile neutrinos and quantum corrections. We then address leptogenesis in supersymmetric scenarios, as well as some other popular variations of the basic leptogenesis framework.
Keywords
Cite
@article{arxiv.1301.3062,
title = {Leptogenesis in the Universe},
author = {Chee Sheng Fong and Enrico Nardi and Antonio Riotto},
journal= {arXiv preprint arXiv:1301.3062},
year = {2013}
}
Comments
60 pages, 4 figures. Published in Special Issue on Neutrino Physics, Advances in High Energy Physics Hindawi Publishing Corporation 2012