Leptogenesis in GeV scale seesaw models
High Energy Physics - Phenomenology
2016-04-12 v2
Abstract
We revisit the production of leptonic asymmetries in minimal extensions of the Standard Model that can explain neutrino masses, involving extra singlets with Majorana masses in the GeV scale. We study the quantum kinetic equations both analytically, via a perturbative expansion up to third order in the mixing angles, and numerically. The analytical solution allows us to identify the relevant CP invariants, and simplifies the exploration of the parameter space. We find that sizeable lepton asymmetries are compatible with non-degenerate neutrino masses and measurable active-sterile mixings.
Cite
@article{arxiv.1508.03676,
title = {Leptogenesis in GeV scale seesaw models},
author = {P. Hernández and M. Kekic and J. López-Pavón and J. Racker and N. Rius},
journal= {arXiv preprint arXiv:1508.03676},
year = {2016}
}
Comments
34 pages, 13 figures. Several typos corrected