Split neutrinos - leptogenesis, dark matter and inflation

Abstract

We propose a simple framework to split neutrinos with a slight departure from tribimaximal mixing - where two of the neutrinos are Majorana type which provide thermal leptogenesis. The Dirac neutrino with a tiny Yukawa coupling explains primordial inflation and the cosmic microwave background radiation, where the inflaton is the gauge invariant flat direction. The observed baryon asymmetry, and the scale of inflation are intimately tied to the observed reactor angle, which can be further constrained by the LHC and the neutrinoless double beta decay experiments. The model also provides the lightest right handed sneutrino as a part of the inflaton to be the dark matter candidate.

5 pages, 1 figure

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Cited by in corpus (7)

• The Phenomenology of Right Handed Neutrinos
• Dark Matter, Baryogenesis and Neutrino Oscillations from Right Handed Neutrinos
• Higgs inflation from new Kähler potential
• Visible sector inflation and the right thermal history in light of Planck data
• Higgs-lepton inflation in the supersymmetric minimal seesaw model
• Common origin of modified chaotic inflation, non thermal dark matter and Dirac neutrino mass
• Neutrino Masses and Leptogenesis from Extra Fermions