Minimal seesaw model with tri/bi-maximal mixing and leptogenesis

Details Minimal seesaw model with tri/bi-maximal mixing and leptogenesis Minimal seesaw model with tri/bi-maximal mixing and leptogenesis

2004-04-21

arxiv.org/abs/hep-ph/0404187v2

Phys.Lett. B597 (2004) 78-88

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 figures, revtex4, version to appear in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2004.06.104

We examine minimal seesaw mechanism in which the masses of light neutrinos are described with tri/bi-maximal mixing in the basis where the charged-lepton Yukawa matrix and heavy Majorana neutrino mass matrix are diagonal. We search for all possible Dirac mass textures which contain at least one zero entry in $3 \times 2$ matrix and evaluate the corresponding lepton asymmetries. We present the baryon asymmetry in terms of a single low energy unknown, a Majorana CP phase to be clued from neutrinoless double beta decay.

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