Neutrino texture saturating the CP asymmetry

Details Neutrino texture saturating the CP asymmetry Neutrino texture saturating the CP asymmetry

2005-03-03

arxiv.org/abs/hep-ph/0503031v1

Phys.Rev. D71 (2005) 073005

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 6 figures

Scientific paper

10.1103/PhysRevD.71.073005

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.

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