Neutrino mass textures and partial mu-tau symmetry

Lashin, E. I.; Chamoun, N.; Hamzaoui, C. et Nasri, S. (2014). « Neutrino mass textures and partial mu-tau symmetry ». Physical Review D, 89(9), 093004-1-093004-35.

Fichier(s) associé(s) à ce document :
Télécharger (50MB)


We discuss the viability of the μ–τ interchange symmetry imposed on the neutrino mass matrix in the flavor space. Whereas the exact symmetry is shown to lead to textures of a completely degenerate spectrum, which is incompatible with the neutrino oscillation data, introducing small perturbations into the preceding textures, inserted in a minimal way, leads, however, to four deformed textures representing an approximate μ–τ symmetry. We motivate the form of these “minimal” textures, which disentangle the effects of the perturbations, and present some concrete realizations assuming exact μ–τ at the Lagrangian level but at the expense of adding new symmetries and matter fields.We find that all of these deformed textures are capable of accommodating the experimental data, and in all types of neutrino mass hierarchies, particularly the nonvanishing value for the smallest mixing angle.

Type: Article de revue scientifique
Mots-clés ou Sujets: PACS numbers: 14.60.Pq, 11.30.Hv, 14.60.St
Unité d'appartenance: Faculté des sciences > Département des sciences de la Terre et de l'atmosphère
Déposé par: Chérif Hamzaoui
Date de dépôt: 25 févr. 2015 13:26
Dernière modification: 25 févr. 2015 13:26
Adresse URL :


Voir les statistiques sur cinq ans...