Lepton Number Violation with and without Majorana Neutrinos
High Energy Physics - Phenomenology
2015-03-27 v1 High Energy Physics - Experiment
Abstract
We discuss the various incarnations of a gauged B-L symmetry: 1) unbroken, it features Dirac neutrinos, neutrinogenesis to create the baryon asymmetry of our Universe, and a potentially light Z' boson; 2) broken by two units, we obtain the standard case of Majorana neutrinos, seesaw and thermal leptogenesis; 3) broken by four units, we find Dirac neutrinos with lepton-number-violating interactions, which can give rise to a new Dirac leptogenesis mechanism. We review and discuss the signatures distinguishing the three scenarios.
Keywords
Cite
@article{arxiv.1503.07708,
title = {Lepton Number Violation with and without Majorana Neutrinos},
author = {Julian Heeck},
journal= {arXiv preprint arXiv:1503.07708},
year = {2015}
}
Comments
6 pages, 2 figures. Contribution to the proceedings of the 50th Rencontres de Moriond, Electroweak Session, 14-21 March 2015