Neutrino mixing and leptogenesis in mu-tau symmetry

Lashin, E. I.; Chamoun, N.; Hamzaoui, C. et Nasri, S. (2015). « Neutrino mixing and leptogenesis in mu-tau symmetry ». Physical Review D, 91(113014).

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Résumé

We study the consequences of the Z2 symmetry behind the μ-τ universality in the neutrino mass matrix. We then implement this symmetry in the type-I seesaw mechanism and show how it can accommodate all sorts of lepton mass hierarchies and generate enough lepton asymmetry to interpret the observed baryon asymmetry in the universe. We also show how a specific form of a high-scale perturbation is kept when translated via the seesaw into the low scale domain, where it can accommodate the neutrino mixing data. We finally present a realization of the high scale perturbed texture through the addition of matter and extra exact symmetries.

Type:	Article de revue scientifique
Mots-clés ou Sujets:	Neutrino physics, flavor symmetry, Matter-anti-matter
Unité d'appartenance:	Faculté des sciences > Département des sciences de la Terre et de l'atmosphère
Déposé par:	Chérif Hamzaoui
Date de dépôt:	26 avr. 2016 19:27
Dernière modification:	26 mai 2016 14:27
Adresse URL :	http://archipel.uqam.ca/id/eprint/8308

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