14–21 mars 2015
Fuseau horaire Europe/Paris

Lepton Number Violation with and without Majorana Neutrinos

15 mars 2015, 19:25
15m
Ordinary Theory Neutrino Physics

Orateur

Dr Julian Heeck (Université Libre de Bruxelles)

Description

We discuss the various incarnations of a gauged B-L symmetry: 1) as an unbroken symmetry, it features Dirac neutrinos, neutrinogenesis to create the baryon asymmetry, 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.

Auteur principal

Dr Julian Heeck (Université Libre de Bruxelles)

Documents de présentation