scholarly journals Trimaximal neutrino mixing from scotogenic A4 family symmetry

2021 ◽  
Vol 815 ◽  
pp. 136122
Author(s):  
Gui-Jun Ding ◽  
Jun-Nan Lu ◽  
José W.F. Valle
Keyword(s):  
Neutrino Mixing ◽  
Family Symmetry

scholarly journals QUARK AND LEPTON MASS MATRICES WITH A4 FAMILY SYMMETRY

2007 ◽  
Vol 16 (05) ◽  
pp. 1383-1393 ◽  
Author(s):  
HIDEYUKI SAWANAKA
Keyword(s):  
Experimental Data ◽  
Neutrino Mixing ◽  
Family Symmetry ◽  
Mixing Angles ◽  
Quark Masses ◽  
Quark Sector ◽  
Mass Matrices ◽  
Mixing Matrix ◽  
Current Experimental Data

Realistic quark masses and mixing angles are obtained applying the successful A4 family symmetry for leptons, motivated by the quark-lepton assignments of SU (5). The A4 symmetry is suitable to give tri-bimaximal neutrino mixing matrix which is consistent with current experimental data. We study new scenario for the quark sector with the A4 symmetry.

scholarly journals Theory for Neutrino Mixing

2016 ◽  
Vol 43 ◽  
pp. 1660197
Author(s):  
Xiao-Gang He
Keyword(s):  
Theoretical Model ◽  
Nobel Prize ◽  
Neutrino Mixing ◽  
Oscillation Pattern ◽  
Family Symmetry ◽  
Mixing Angles ◽  
Mixing Matrix ◽  
Nobel Prize In Physics ◽  
Matrix Formula ◽  
Made In

Since the discovery of neutrino oscillations, for which Takaaki Kajita and Arthur B. McDonald were awarded the 2015 Nobel prize in physics, tremendous progresses have been made in measuring the mixing angles which determine the oscillation pattern. A lot of theoretical efforts have been made to understand how neutrinos mix with each other. Present data show that in the standard parameterization of the mixing matrix, [Formula: see text] is close to [Formula: see text] and the CP violating phase is close to [Formula: see text]. In this talk I report results obtained in arXiv:1505.01932 (Phys. Lett. B750(2015)620) and arXive:1404.01560 (Chin. J. Phys.53(2015)100101) and discuss some implications for theoretical model buildings for such mixing pattern. Specific examples for neutrino mixing based on [Formula: see text] family symmetry are given.

scholarly journals Family Symmetry and Neutrino Mixing

1998 ◽  
Vol 81 (23) ◽  
pp. 5064-5067 ◽  
Author(s):  
John K. Elwood ◽  
Nikolaos Irges ◽  
Pierre Ramond
Keyword(s):  
Neutrino Mixing ◽  
Family Symmetry

scholarly journals Lepton Family Symmetry and the Neutrino Mixing Matrix

2006 ◽  
Vol 53 ◽  
pp. 451-457 ◽  
Author(s):  
Ernest Ma
Keyword(s):  
Neutrino Mixing ◽  
Family Symmetry ◽  
Mixing Matrix ◽  
Lepton Family

scholarly journals Δ(27) family symmetry and neutrino mixing

2015 ◽  
Vol 2015 (8) ◽  
Author(s):  
Ivo de Medeiros Varzielas
Keyword(s):  
Neutrino Mixing ◽  
Family Symmetry

scholarly journals Icosahedral (A5) family symmetry and the golden ratio prediction for solar neutrino mixing

2009 ◽  
Vol 79 (8) ◽  
Author(s):  
Lisa L. Everett ◽  
Alexander J. Stuart
Keyword(s):  
Solar Neutrino ◽  
Golden Ratio ◽  
Neutrino Mixing ◽  
Family Symmetry

scholarly journals Almost Maximally Broken Permutation Symmetry for Neutrino Mass Matrix

1997 ◽  
Vol 12 (16) ◽  
pp. 1175-1184 ◽  
Author(s):  
Kyungsik Kang ◽  
Sin Kyu Kang ◽  
Jihn E. Kim ◽  
Pyungwon Ko
Keyword(s):  
Mass Matrix ◽  
Atmospheric Neutrino ◽  
Current Data ◽  
Double Beta Decay ◽  
Neutrino Masses ◽  
Neutrino Mixing ◽  
Family Symmetry ◽  
Majorana Neutrinos ◽  
Charged Leptons ◽  
The Masses

Assuming three light neutrinos are Majorana particles, we propose mass matrix ansatz for the charged leptons and Majorana neutrinos with family symmetry S3 broken into S1 and S2, respectively. Each matrix has three parameters, which are fixed by measured charged lepton masses, differences of squared neutrino masses relevant to the solar and the atmospheric neutrino puzzles, and the masses of three light Majorana neutrinos as a candidate for hot dark matter with ∑|mν|~ 6 eV . The resulting neutrino mixing is compatible with the data for the current upper limit, <mνe> th <0.7 eV , of neutrino-less double beta decay experiments, and the current data for various types of neutrino oscillation experiments. One solution of our model predicts that νμ→ντ oscillation probability is about < 0.008 with Δm2 ~ 10-2 eV 2, which may not be accessible at CHORUS and other on-going experiments.

scholarly journals TETRAHEDRAL FAMILY SYMMETRY AND THE NEUTRINO MIXING MATRIX

2005 ◽  
Vol 20 (34) ◽  
pp. 2601-2605 ◽  
Author(s):  
ERNEST MA
Keyword(s):  
Neutrino Mass ◽  
Mass Matrix ◽  
Neutrino Mass Matrix ◽  
Neutrino Mixing ◽  
Symmetry Limit ◽  
Family Symmetry ◽  
Seesaw Mechanism ◽  
Mixing Angles ◽  
Mixing Matrix ◽  
Natural Symmetry

In a new application of the discrete non-Abelian symmetry A4 using the canonical seesaw mechanism, a three-parameter form of the neutrino mass matrix is derived. It predicts the following mixing angles for neutrino oscillations: θ13=0, sin 2θ23=1/2, and sin 2θ12 close, but not exactly equal to 1/3, in one natural symmetry limit.

scholarly journals Tri-bimaximal neutrino mixing and the family symmetry Z7⋊Z3

2007 ◽  
Vol 652 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Christoph Luhn ◽  
Salah Nasri ◽  
Pierre Ramond
Keyword(s):  
Neutrino Mixing ◽  
Family Symmetry ◽  
The Family

scholarly journals SO(3) GAUGE SYMMETRY AND NEARLY TRI-BIMAXIMAL NEUTRINO MIXING

2008 ◽  
Vol 23 (21) ◽  
pp. 3376-3383 ◽  
Author(s):  
YUE-LIANG WU
Keyword(s):  
Recent Progress ◽  
Higgs Bosons ◽  
Neutrino Masses ◽  
Flavor Symmetry ◽  
Neutrino Mixing ◽  
Family Symmetry ◽  
Mixing Angle ◽  
Majorana Neutrinos ◽  
Charged Leptons ◽  
Made In

In this note I mainly focus on the neutrino physics part in my talk and report the most recent progress made in 1. It is seen that the Majorana features of neutrinos and SO (3) gauge flavor symmetry can simultaneously explain the smallness of neutrino masses and nearly tri-bimaximal neutrino mixing when combining together with the mechanism of approximate global U (1) family symmetry. The mixing angle θ13 and CP-violating phase are in general nonzero and testable experimentally at the allowed sensitivity. The model also predicts the existence of vector-like Majorana neutrinos and charged leptons as well as new Higgs bosons, some of them can be light and explored at the LHC and ILC.

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