Minimal Textures in Seesaw Mass Matrices and their low and high Energy Phenomenology

Abstract

In an attempt to find minimal scenarios we study the implications of Dirac and Majorana mass matrices with texture zeros within the type I seesaw mechanism. For the Dirac mass matrices we consider 5 zero textures which we show to be the most minimal form that can successfully account for low energy phenomenology if the Majorana mass matrices are chosen minimal as well. For those, we consider both diagonal and even more minimal non-diagonal forms. The latter can be motivated e.g. by simple U(1) flavour symmetries and have two degenerate eigenvalues. We classify the allowed textures and discuss the ramifications for leptogenesis and lepton flavour violation.

Typos corrected

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• Masses, mixing angles and phases of general Majorana neutrino mass matrix
• Phenomenological study of extended seesaw model for light sterile neutrino
• On the Vanishing of the CP Asymmetry in Leptogenesis due to Form Dominance
• Texture Zeros for Dirac Neutrinos and Current Experimental Tests
• Scaling ansatz, four zero Yukawa textures and large ${\theta }_{13}$
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• Doubly charged scalar decays in a type II seesaw scenario with two Higgs triplets
• Scaling ansatz with texture zeros in linear seesaw
• Two Zero Mass Matrices and Sterile Neutrinos
• Relating large $U_{e3}$ to the ratio of neutrino mass-squared differences
• Probing texture zeros with scaling ansatz in inverse seesaw
• Distinctive Collider Signals for a Two Higgs Triplet Model
• Generalized Scaling Ansatz and Minimal Seesaw Mechanism
• Leptogenesis in a Hybrid Texture Neutrino Mass Model
• Neutrino Mass and Flavour Models
• Revisiting the two-zero texture Majorana neutrino mass matrix
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• $TeV$-Scale Resonant Leptogenesis with New Scaling Ansatz on Neutrino Dirac Mass Matrix from $A_4$ Flavor Symmetry