Abelian family symmetries and Leptogenesis
High Energy Physics - Phenomenology
2009-10-31 v4
Abstract
We study the impact of a set of horizontal symmetries on the requirements for producing the baryon asymmetry of the universe via leptogenesis. We find that Abelian horizontal symmetries lead to a simple description of the parameters describing leptogenesis in terms of the small expansion parameter that arises from spontaneous symmetry breaking. If the family symmetry is made discrete, then an enhancement in the amount of leptogenesis can result.
Keywords
Cite
@article{arxiv.hep-ph/9906490,
title = {Abelian family symmetries and Leptogenesis},
author = {M. S. Berger},
journal= {arXiv preprint arXiv:hep-ph/9906490},
year = {2009}
}
Comments
11 pages, 2 figures, version to appear in Physical Review D