Scaling ansatz, four zero Yukawa textures and large ${\theta }_{13}$

Abstract

We investigate 'Scaling ansatz' in the neutrino sector within the framework of type I seesaw mechanism with diagonal charged lepton and right handed Majorana neutrino mass matrices ($M_R$). We also assume four zero texture of Dirac neutrino mass matrices ($m_D$) which severely constrain the phenomenological outcomes of such scheme. Scaling ansatz and the present neutrino data allow only Six such matrices out of 126 four zero Yukawa matrices. In this scheme, in order to generate large ${\theta }_{13}$ we break scaling ansatz in $m_D$ through a perturbation parameter and we also show our breaking scheme is radiatively stable. We further investigate CP violation and baryogenesis via leptogenesis in those surviving textures.

25 pages, 8 figures, Accepted for publication in Phys. Rev. D

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Cited by in corpus (19)

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• Charged Lepton Corrections to Scaling Neutrino Mixing
• Seesaw mechanism with four texture zeros in the neutrino Yukawa matrix
• Extended scaling and residual flavor symmetry in the neutrino Majorana mass matrix
• Baryon asymmetry via leptogenesis in a neutrino mass model with complex scaling
• Evaluation of the Majorana Phases of a General Majorana Neutrino Mass Matrix: Testability of hierarchical Flavour Models
• Generalized Scaling Ansatz and Minimal Seesaw Mechanism
• Seesaw model and two zero flavor neutrino texture
• Corrections to Scaling Neutrino Mixing: Non-zero ${\theta }_{13},{\delta }_{CP}$ and Baryon Asymmetry
• Dual models of the neutrino mass spectrum
• Singlet Fermion Assisted Dominant Seesaw with Lepton Flavor and Number Violations and Leptogenesis
• A Froggatt-Nielsen flavor model for neutrino physics
• Hidden relations in three generation seesaw model with Dirac mass matrix of four-zero texture
• Neutrino Yukawa textures within type-I see-saw
• $TeV$-Scale Resonant Leptogenesis with New Scaling Ansatz on Neutrino Dirac Mass Matrix from $A_4$ Flavor Symmetry