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The European Physical Journal C

, Volume 56, Issue 3, pp 379–387 | Cite as

Leptogenesis and dark matter unified in a non-SUSY model for neutrino masses

  • D. Suematsu
Regular Article - Theoretical Physics

Abstract

We propose a unified explanation for the origin of dark matter and baryon number asymmetry on the basis of a non-supersymmetric model for the 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 by a new additional doublet scalar. A spontaneously broken U(1) brings about 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. We also show that the decay of a heavy right-handed neutrino related to the seesaw mechanism can generate baryon number asymmetry through leptogenesis.

Keywords

Dark Matter Yukawa Coupling Neutrino Masse Cold Dark Matter Lepton Number 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2008

Authors and Affiliations

  1. 1.Institute for Theoretical PhysicsKanazawa UniversityKanazawaJapan

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