Rotated μ-τ Symmetry for one generic neutrino mixing angle: An analytical study

E. I. Lashin, N. Chamoun, C. Hamzaoui, S. Nasri

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We find a realization of the Z2 symmetry in the neutrino mass matrix which expresses a rotation of the μ-τ symmetry and is able to impose a generic smallest mixing angle, in contrast to a zero-value predicted by the usual nonrotated form of the μ-τ symmetry. We extend this symmetry for the lepton sector within the type-I seesaw scenario and show it can accommodate the mixing angles, the mass hierarchies, and the lepton asymmetry in the Universe. We then study the effects of perturbing the specific form of the neutrino mass matrix imposed by the symmetry and compute the resulting mixing and mass spectrum. We trace back this "low-scale" perturbation to a "high-scale" perturbation, and find realizations of this latter one arising from exact symmetries with an enriched matter content.

Original languageEnglish
Article number015003
JournalPhysical Review D
Issue number1
Publication statusPublished - Jul 1 2017

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


Dive into the research topics of 'Rotated μ-τ Symmetry for one generic neutrino mixing angle: An analytical study'. Together they form a unique fingerprint.

Cite this