scholarly journals Fermion masses and neutrino mixing in anU(1)Hflavor symmetry model with hierarchical radiative generation for light charged fermion masses

2007 ◽  
Vol 76 (9) ◽  
Author(s):  
Albino Hernández-Galeana
Keyword(s):  
Neutrino Mixing ◽  
Charged Fermion ◽  
Symmetry Model ◽  
Fermion Masses

Fermion masses and neutrino mixing in an SU(5) (grand unification) ⊗ SU(8) (extended hypercolor) model

1984 ◽  
Vol 29 (9) ◽  
pp. 2095-2099
Author(s):  
Gordon J. Aubrecht ◽  
T. Matsuki ◽  
K. Tanaka
Keyword(s):  
Grand Unification ◽  
Neutrino Mixing ◽  
Fermion Masses

scholarly journals FERMION MASSES, NEUTRINO MIXING AND CP VIOLATION FROM THE ANTI-GRAND-UNIFICATION MODEL

1998 ◽  
Vol 13 (29) ◽  
pp. 5037-5074 ◽  
Author(s):  
C. D. FROGGATT ◽  
M. GIBSON ◽  
H. B. NIELSEN ◽  
D. J. SMITH
Keyword(s):  
Cp Violation ◽  
Mass Scale ◽  
Grand Unification ◽  
Neutrino Mixing ◽  
Mixing Angles ◽  
Quantum Numbers ◽  
Fermion Masses ◽  
The Standard Model ◽  
Higgs Fields ◽  
Fundamental Mass

The fermion masses and mixing angles are fitted using only three free parameters in a nonsupersymmetric extension of the Standard Model, with new, approximately conserved chiral gauge quantum numbers broken by a set of Higgs fields. The fundamental mass scale of this anti-grand-unification model is given by the Planck mass. We also calculate neutrino mixing angles and masses, as well as CP violation from the CKM matrix. A good fit to the observed fermion masses is obtained, but our predictions of the neutrino masses are too small to lead to any observable neutrino oscillation effects claimed today, without introducing another mass scale. We also give some arguments in support of this type of model based on the observed fermion masses.

scholarly journals Charged-fermion masses in : Analysis with scalars in

2006 ◽  
Vol 754 (1-2) ◽  
pp. 1-16 ◽  
Author(s):  
Luís Lavoura ◽  
Helmut Kühböck ◽  
Walter Grimus
Keyword(s):  
Charged Fermion ◽  
Fermion Masses

scholarly journals A NewS4Flavor Symmetry in 3-3-1 Model with Neutral Fermions

2014 ◽  
Vol 2014 ◽  
pp. 1-24 ◽  
Author(s):  
V. V. Vien ◽  
H. N. Long
Keyword(s):  
Scalar Potential ◽  
Neutrino Masses ◽  
Neutrino Mixing ◽  
Gauge Bosons ◽  
Quark Masses ◽  
Model Based ◽  
Fermion Masses ◽  
The Standard Model ◽  
Mixing Matrix ◽  
The Difference

A newS4flavor model based onSU(3)C⊗SU(3)L⊗U(1)Xgauge symmetry responsible for fermion masses and mixings is constructed. The neutrinos get small masses from only an antisextet ofSU(3)Lwhich is in a doublet underS4. In this work, we assume the VEVs of the antisextet differ from each other underS4and the difference of these VEVs is regarded as a small perturbation, and then the model can fit the experimental data on neutrino masses and mixings. Our results show that the neutrino masses are naturally small and a deviation from the tribimaximal neutrino mixing form can be realized. The quark masses and mixing matrix are also discussed. The number of required Higgs multiplets is less and the scalar potential of the model is simpler than those of the model based onS3and our previousS4model. The assignation of VEVs to antisextet leads to the mixing of the new gauge bosons and those in the standard model. The mixing in the charged gauge bosons as well as the neutral gauge bosons is considered.

scholarly journals CHARGE QUANTIZATION IN THE LARGEST LEPTOQUARK–BILEPTON CHIRAL ELECTROWEAK SCHEME

1999 ◽  
Vol 14 (17) ◽  
pp. 1133-1142 ◽  
Author(s):  
A. DOFF ◽  
F. PISANO
Keyword(s):  
Gauge Group ◽  
Electric Charge ◽  
Charged Fermion ◽  
Charge Quantization ◽  
Fermion Masses

The uniqueness of the hypercharge assignments in the three-fermion families leptoquark–bilepton SU (3)C× SU (4)L× U (1)N model is established. Although the gauge group contains an explicit U(1) factor, freedom from triangle anomalies combined with the requirement of nonvanishing charged fermion masses uniquely fix the electric charges of all fermions independently of the neutrinos being massless or not. The electric-charge quantization, flavor family replication, and the existence of three colors are interwoven.

scholarly journals Neutrino mixing with nonzero θ13 and CP violation in the 3-3-1 model based on A4 flavor symmetry

2015 ◽  
Vol 30 (21) ◽  
pp. 1550117 ◽  
Author(s):  
Vo Van Vien ◽  
Hoang Ngoc Long
Keyword(s):  
Cp Violation ◽  
Effective Mass ◽  
Beta Decay ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Neutrino Masses ◽  
Flavor Symmetry ◽  
Neutrino Mixing ◽  
Fermion Masses ◽  
New Formula

We propose a 3-3-1 model with neutral fermions based on [Formula: see text] flavor symmetry responsible for fermion masses and mixings with nonzero [Formula: see text]. To get realistic neutrino mixing, we just add a new [Formula: see text] triplet being in [Formula: see text] under [Formula: see text]. The neutrinos get small masses from two [Formula: see text] antisextets and one [Formula: see text] triplet. The model can fit the present data on neutrino masses and mixing as well as the effective mass governing neutrinoless double beta decay. Our results show that the neutrino masses are naturally small and a little deviation from the tri-bimaximal neutrino mixing form can be realized. The Dirac CP violation phase [Formula: see text] is predicted to either [Formula: see text] or [Formula: see text] with [Formula: see text].

scholarly journals Fermion masses and neutrino mixing in an SU(5)/sub GUT/ x SU(8)/sub ETC/ model

1983 ◽  
Author(s):  
G.J. II Aubrecht ◽  
T. Matsuki ◽  
K. Tanaka
Keyword(s):  
Neutrino Mixing ◽  
Fermion Masses
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