Neutrino texture saturating the CP asymmetry

Abstract

We study a neutrino mass texture which can explain the neutrino oscillation data and also saturate the upper bound of the CP asymmetry ${\epsilon }_1$ in the leptogenesis. We consider the thermal and non-thermal leptogenesis based on the right-handed neutrino decay in this model. A lower bound of the reheating temperature required for the explanation of the baryon number asymmetry is estimated as $O(10^8)$GeV for the thermal leptogenesis and $O(10^6)$GeV for the non-thermal one.It can be lower than the upper bound of the reheating temperature imposed by the cosmological gravitino problem. An example of the construction of the discussed texture is also presented.

23 pages, 6 figures

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• Baryon number asymmetry and dark matter in the neutrino mass model with an inert doublet
• Leptogenesis and dark matter unified in a non-SUSY model for neutrino masses
• Thermal leptogenesis in a TeV scale model for neutrino masses
• Affleck-Dine leptogenesis in the radiative neutrino mass model
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