Dark matter and leptogenesis in a non-SUSY model for neutrino masses

Details Dark matter and leptogenesis in a non-SUSY model for neutrino masses Dark matter and leptogenesis in a non-SUSY model for neutrino masses

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jphcs.136d2025s&link_type=abstract

Journal of Physics: Conference Series, Volume 136, Issue 4, pp. 042025 (2008).

Physics

Scientific paper

We propose a unified explanation for the origin of dark matter and baryon number asymmetry in a non-supersymmetric model for neutrino masses. Neutrino masses are generated in two distinct ways, that is, a tree-level seesaw mechanism with a single right-handed neutrino and one-loop radiative effects due to a new additional doublet scalar. A spontaneously broken U(l)' brings a Z2 symmetry which restricts couplings of this new scalar and controls the neutrino masses. It also guarantees the stability of a CDM candidate. We examine two possible candidates for the CDM in the model. We also show that the decay of a heavy right-handed neutrino related to the seesaw mechanism can generate baryon number asymmetry in the universe through leptogenesis.

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