Split neutrinos - leptogenesis, dark matter and inflation

Details Split neutrinos - leptogenesis, dark matter and inflation Split neutrinos - leptogenesis, dark matter and inflation

2012-01-30

arxiv.org/abs/1201.6189v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure

Scientific paper

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.

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