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arXiv · 0901.3524

CP Violation and Lightest Neutrino Mass Effects in Thermal Leptogenesis

E. Molinaro·S. T. Petcov·T. Shindou·Y. Takanishi
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Abstract

Effects of the lightest neutrino mass in "flavoured" leptogenesis when the CP-violation necessary for the generation of the baryon asymmetry of the Universe is due exclusively to the Dirac and/or Majorana phases in the neutrino mixing matrix $U$ are discussed. The type I see-saw scenario with three heavy right-handed Majorana neutrinos having hierarchical spectrum is considered. The "orthogonal" parametrisation of the matrix of neutrino Yukawa couplings, which involves a complex orthogonal matrix $R$, is employed. Results for light neutrino mass spectrum with normal and inverted ordering (hierarchy) are reviewed.

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E. Molinaro, S. T. Petcov, T. Shindou, Y. Takanishi. 2009-01-22. CP Violation and Lightest Neutrino Mass Effects in Thermal Leptogenesis. https://doi.org/10.1088/1742-6596/171/1/012077

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