Leptogenesis from Additional Higgs Doublets
High Energy Physics - Phenomenology
2012-06-26 v2 Cosmology and Nongalactic Astrophysics
Abstract
Leptogenesis may be induced by the mixing of extra Higgs doublets with experimentally accessible masses. This mechanism relies on diagrammatic cuts that are kinematically forbidden in the vacuum but contribute at finite temperature. A resonant enhancement of the asymmetry occurs generically provided the dimensionless Yukawa and self-interactions are suppressed compared to those of the Standard Model Higgs field. This is in contrast to typical scenarios of Resonant Leptogenesis, where the asymmetry is enhanced by imposing a degeneracy of singlet neutrino masses.
Keywords
Cite
@article{arxiv.1201.5126,
title = {Leptogenesis from Additional Higgs Doublets},
author = {Bjorn Garbrecht},
journal= {arXiv preprint arXiv:1201.5126},
year = {2012}
}
Comments
12 pages; more phenomenological details added