Neutrino tri-bi-maximal mixing through sequential dominance

Abstract

We consider an existing framework of models where the neutrino Dirac and Majorana mass terms are related, and clarify how the mass structures interact through the type I seesaw mechanism, producing exact tri-bi-maximal mixing for the effective neutrinos in the limit of strong Majorana mass hierarchy (sequential dominance). In order to better illustrate this, we draw the seesaw diagrams expanded to show the relevant details, discuss an underlying symmetry that must be preserved by the neutrino mass terms, and diagonalise the effective neutrino mass matrix corresponding to the sequential dominance limit.

6 pages, 3 diagrams

References in corpus (8)

• Tri-Bimaximal Mixing and the Neutrino Oscillation Data
• JaxoDraw: A graphical user interface for drawing Feynman diagrams
• Large Mixing Angle MSW and Atmospheric Neutrinos from Single Right-Handed Neutrino Dominance and U(1) Family Symmetry
• Neutrino tri-bi-maximal mixing from a non-Abelian discrete family symmetry
• SU(3) family symmetry and neutrino bi-tri-maximal mixing
• The Flavor Group Delta(3n^2)
• Tri-bimaximal mixing, discrete family symmetries, and a conjecture connecting the quark and lepton mixing matrices
• Family symmetries and the origin of fermion masses and mixings

Cited by in corpus (5)

• Tri-Bimaximal Lepton Mixing and Leptogenesis
• Lepton Flavour Violation in a Supersymmetric Model with A4 Flavour Symmetry
• Towards a complete $\Delta (27)\times SO(10)$ SUSY GUT
• Tri-bi-maximal mixing in viable family symmetry unified model with extended seesaw
• Quasi-degenerate neutrinos and tri-bi-maximal mixing