Baryogenesis through leptogenesis
High Energy Physics - Phenomenology
2009-10-09 v4
Abstract
Baryogenesis by heavy-neutrino decay and sphaleron reprocessing of both baryon and lepton number is reconsidered, paying special attention to the flavour structure of the general evolution equations and developing an approximate but sufficiently accurate analytic solution to the prototype evolution equation. Two different models of neutrino masses are examined, based on an Abelian U(1) or a non-Abelian U(2) family symmetry. We show that a consistent picture of baryogenesis can emerge in both cases, although with significant differences.
Keywords
Cite
@article{arxiv.hep-ph/9911315,
title = {Baryogenesis through leptogenesis},
author = {Riccardo Barbieri and Paolo Creminelli and Alessandro Strumia and Nikolaos Tetradis},
journal= {arXiv preprint arXiv:hep-ph/9911315},
year = {2009}
}
Comments
14 pages. v4: revised using the corrected Boltzmann equations of hep-ph/0310123