Matter Antimatter Asymmetry and Neutrino Properties
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
The cosmological baryon asymmetry can be explained as remnant of heavy Majorana neutrino decays in the early universe. We study this mechanism for two models of neutrino masses with a large \nu_\mu-\nu_\tau mixing angle which are based on the symmetries SU(5) x U(1)_F and SU(3)_c x SU(3)_L x SU(3)_R x U(1)_F, respectively. In both cases B-L is broken at the unification scale \Lambda_{GUT}. The models make different predictions for the baryogenesis temperature and the gravitino abundance.
Keywords
Cite
@article{arxiv.hep-ph/9904310,
title = {Matter Antimatter Asymmetry and Neutrino Properties},
author = {W. Buchmuller and M. Plumacher},
journal= {arXiv preprint arXiv:hep-ph/9904310},
year = {2009}
}
Comments
latex2e, 14 pages, 2 figures, Contribution to the Festschrift for L. B. Okun, to appear in a special issue of Physics Reports, eds. V. L. Telegdi and K. Winter