Universal Neutrino Mass Hierarchy and Cosmological Baryon Number Asymmetry

Details Universal Neutrino Mass Hierarchy and Cosmological Baryon Number Asymmetry Universal Neutrino Mass Hierarchy and Cosmological Baryon Number Asymmetry

2004-06-04

arxiv.org/abs/hep-ph/0406047v3

Phys.Rev. D70 (2004) 071302

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTex 8 pages (1 PS figure included). Fig. 1 changed. Accepted for publication in PRD

Scientific paper

10.1103/PhysRevD.70.071302

We conjecture that three light Majorana neutrinos and their right-handed counterparts may have a universal geometric mass hierarchy. Incorporating this phenomenological conjecture with the Fritzsch texture of lepton mass matrices in a simple seesaw mechanism, we show that it is possible to simultaneously account for current neutrino oscillation data and the cosmological baryon number asymmetry via leptogenesis.

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