Low-scale standard supersymmetric leptogenesis
High Energy Physics - Phenomenology
2010-11-05 v3
Abstract
Strictly adhering to the standard supersymmetric seesaw mechanism, we present a neutrino mass model which allows successful standard thermal leptogenesis compatible with gravitino cosmology. At least some of the neutrino Yukawa couplings must be much larger than the naive estimates following from the seesaw formula. This leads to large BR(mu->e gamma), detectable in the next round of experiments. Ratios of mu->e gamma, tau->e gamma and tau->mu gamma branching ratios are predicted in terms of the measurable neutrino mass matrix.
Cite
@article{arxiv.hep-ph/0408015,
title = {Low-scale standard supersymmetric leptogenesis},
author = {Martti Raidal and Alessandro Strumia and Krzysztof Turzynski},
journal= {arXiv preprint arXiv:hep-ph/0408015},
year = {2010}
}
Comments
15 pages, 4 eps figures; v2: typos corrected, references added, reasoning clarified; v3: 16 pages, off-shell wash-out effects included in the addendum (pp.15-16)