scholarly journals New Possibilities of Hybrid Texture of Neutrino Mass Matrix

2018 ◽  
Vol 2018 ◽  
pp. 1-24
Author(s):  
Madan Singh
Keyword(s):  
Numerical Analysis ◽  
Neutrino Mass ◽  
Experimental Test ◽  
Confidence Level ◽  
Mass Matrix ◽  
Neutrino Mass Matrix ◽  
Light Neutrino ◽  
The Novel ◽  
Light Neutrino Mass

We investigate the novel possibilities of hybrid textures comprising a vanishing minor (or element) and two equal elements (or cofactors) in light neutrino mass matrix Mν. Such type of texture structures leads to sixty phenomenological cases each, out of which only fifty-six are viable with texture containing a vanishing minor and an equality between the elements in Mν, while fifty are found to be viable with texture containing a vanishing element and an equality of cofactors in Mν under the current experimental test at 3σ confidence level. Detailed numerical analysis of all the possible cases has been presented.

scholarly journals Neutrino mass matrices from two zero 3 × 2 Yukawa textures and minimal d = 5 entries

2016 ◽  
Vol 31 (13) ◽  
pp. 1650077 ◽  
Author(s):  
Avtandil Achelashvili ◽  
Zurab Tavartkiladze
Keyword(s):  
Neutrino Mass ◽  
Mass Matrix ◽  
Neutrino Mass Matrix ◽  
Light Neutrino ◽  
Tree Level ◽  
Cp Asymmetry ◽  
Mass Matrices ◽  
Light Neutrino Mass ◽  
Texture Zero ◽  
Predictive Relations

Aiming to relate leptonic CP violating phase [Formula: see text] to the cosmological CP asymmetry, we study the extension of MSSM by two quasi-degenerate (strictly degenerate at tree level) right-handed neutrinos and consider all possible two texture zero [Formula: see text] Yukawa matrices plus one [Formula: see text] dimension five [Formula: see text] operator contributing to the light neutrino mass matrix. We classify all experimentally viable mass matrices, leading to several predictions, and analytically derive predictive relations. We also relate the CP violating [Formula: see text] phase to the CP phase of the thermal leptogenesis.

scholarly journals Radiative seesaw corrections and charged-lepton decays in a model with soft flavour violation

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
E. H. Aeikens ◽  
P. M. Ferreira ◽  
W. Grimus ◽  
D. Jurčiukonis ◽  
L. Lavoura
Keyword(s):  
Neutrino Mass ◽  
Mass Matrix ◽  
Branching Ratios ◽  
Neutrino Mass Matrix ◽  
Light Neutrino ◽  
Radiative Corrections ◽  
Light Neutrino Mass ◽  
Flavour Violation ◽  
The One ◽  
Lepton Flavour

Abstract We consider the one-loop radiative corrections to the light-neutrino mass matrix and their consequences for the predicted branching ratios of the five lepton-flavour-violating decays $$ {\mathrm{\ell}}_1^{-}\to {\mathrm{\ell}}_2^{-}{\mathrm{\ell}}_3^{+}{\mathrm{\ell}}_3^{-} $$ ℓ 1 − → ℓ 2 − ℓ 3 + ℓ 3 − in a two-Higgs-doublet model furnished with the type-I seesaw mechanism and soft lepton-flavour violation. We find that the radiative corrections are very significant; they may alter the predicted branching ratios by several orders of magnitude and, in particular, they may help explain why BR (μ− → e−e+e−) is strongly suppressed relative to the branching ratios of the decays of the τ−. We conclude that, in any serious numerical assessment of the predictions of this model, it is absolutely necessary to take into account the one-loop radiative corrections to the light-neutrino mass matrix.

scholarly journals The Texture One-Zero Neutrino Mass Matrix with Vanishing Trace

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Madan Singh
Keyword(s):  
Experimental Data ◽  
Neutrino Mass ◽  
Confidence Level ◽  
Mass Matrix ◽  
Majorana Neutrino ◽  
Neutrino Mass Matrix ◽  
Current Experimental Data ◽  
The One ◽  
Zero Sum ◽  
Majorana Neutrino Mass

In the light of latest neutrino oscillation data, we have investigated the one-zero Majorana neutrino mass matrix Mν with zero sum condition of mass eigenvalues in the flavor basis, where charged lepton mass matrix is diagonal. Among the six possible one-zero cases, it is found that only five can survive the current experimental data, while case with (1, 1) vanishing element of Mν is ruled out, if zero trace condition is imposed at 3σ confidence level (CL). Numerical and some approximate analytical results are presented.

scholarly journals Embedding the texture of the neutrino mass matrix into the MaVaNs scenario

2006 ◽  
Vol 2006 (01) ◽  
pp. 042-042 ◽  
Author(s):  
Mizue Honda ◽  
Ryo Takahashi ◽  
Morimitsu Tanimoto
Keyword(s):  
Neutrino Mass ◽  
Mass Matrix ◽  
Neutrino Mass Matrix

scholarly journals Broken S3 symmetry in the neutrino mass matrix

2011 ◽  
Vol 702 (1) ◽  
pp. 28-33 ◽  
Author(s):  
S. Dev ◽  
Shivani Gupta ◽  
Radha Raman Gautam
Keyword(s):  
Neutrino Mass ◽  
Mass Matrix ◽  
Neutrino Mass Matrix

scholarly journals (Z2)3symmetry of the nontribimaximal pattern for the neutrino mass matrix

2012 ◽  
Vol 86 (3) ◽  
Author(s):  
E. I. Lashin ◽  
M. Abbas ◽  
N. Chamoun ◽  
S. Nasri
Keyword(s):  
Neutrino Mass ◽  
Mass Matrix ◽  
Neutrino Mass Matrix

scholarly journals Radiative and seesaw threshold corrections to theS3symmetric neutrino mass matrix

2015 ◽  
Vol 740 ◽  
pp. 353-358 ◽  
Author(s):  
Shivani Gupta ◽  
C.S. Kim ◽  
Pankaj Sharma
Keyword(s):  
Neutrino Mass ◽  
Mass Matrix ◽  
Neutrino Mass Matrix

scholarly journals HIDING THE EXISTENCE OF A FAMILY SYMMETRY IN THE STANDARD MODEL

2005 ◽  
Vol 20 (36) ◽  
pp. 2767-2774 ◽  
Author(s):  
ERNEST MA
Keyword(s):  
Standard Model ◽  
Neutrino Mass ◽  
Mass Matrix ◽  
Higgs Sector ◽  
Higgs Doublet ◽  
Neutrino Mass Matrix ◽  
Tree Level ◽  
Family Symmetry ◽  
The Standard Model

If a family symmetry exists for the quarks and leptons, the Higgs sector is expected to be enlarged to be able to support the transformation properties of this symmetry. There are, however, three possible generic ways (at tree level) of hiding this symmetry in the context of the Standard Model with just one Higgs doublet. All three mechanisms have their natural realizations in the unification symmetry E6 and one in SO (10). An interesting example based on SO (10)×A4 for the neutrino mass matrix is discussed.

scholarly journals The Simplest Neutrino Mass Matrix Revisited

2013 ◽  
Author(s):  
Paul Harrison ◽  
Rama Krishnan ◽  
William Scott
Keyword(s):  
Neutrino Mass ◽  
Mass Matrix ◽  
Neutrino Mass Matrix
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