Matter Antimatter Asymmetry and Neutrino Properties
W. Buchmuller, M. Plumacher
TL;DR
This paper explores how heavy Majorana neutrino decays could explain the universe's matter-antimatter asymmetry, analyzing two models with large mu-tau neutrino mixing based on different symmetry groups.
Contribution
It compares two neutrino mass models with large mu-tau mixing, analyzing their implications for baryogenesis and early universe conditions.
Findings
Different predictions for baryogenesis temperature.
Distinct gravitino abundance outcomes.
Models based on SU(5) x U(1)_F and SU(3)_c x SU(3)_L x SU(3)_R x U(1)_F.
Abstract
The cosmological baryon asymmetry can be explained as remnant of heavy Majorana neutrino decays in the early universe. We study this mechanism for two models of neutrino masses with a large \nu_\mu-\nu_\tau mixing angle which are based on the symmetries SU(5) x U(1)_F and SU(3)_c x SU(3)_L x SU(3)_R x U(1)_F, respectively. In both cases B-L is broken at the unification scale \Lambda_{GUT}. The models make different predictions for the baryogenesis temperature and the gravitino abundance.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.