CP Violation and Lightest Neutrino Mass Effects in Thermal Leptogenesis
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 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 , is employed. Results for light neutrino mass spectrum with normal and inverted ordering (hierarchy) are reviewed.
Cite
@article{arxiv.0901.3524,
title = {CP Violation and Lightest Neutrino Mass Effects in Thermal Leptogenesis},
author = {E. Molinaro and S. T. Petcov and T. Shindou and Y. Takanishi},
journal= {arXiv preprint arXiv:0901.3524},
year = {2009}
}
Comments
To appear in the proceedings of DISCRETE'08, Symposium on Prospects in the Physics of Discrete Symmetries, IFIC, Valencia, Spain, 11-16 December 2008