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arXiv · 0704.3048

Non-thermal leptogenesis with strongly hierarchical right handed neutrinos

V. Nefer Senoguz
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Abstract

Assuming the Dirac-type neutrino masses m_D are related to quark or charged lepton masses, neutrino oscillation data indicate that right handed neutrino masses are in general strongly hierarchical. In particular, if m_D is similar to the up-type quark masses, the mass of the lightest right handed neutrino M_1<~10^6 GeV. We show that non-thermal leptogenesis by inflaton decay can yield sufficient baryon asymmetry despite this constraint, and discuss how the asymmetry is correlated with the low energy neutrino masses and CP-violating phases.

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V. Nefer Senoguz. 2007-07-25. Non-thermal leptogenesis with strongly hierarchical right handed neutrinos. https://doi.org/10.1103/physrevd.76.013005

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