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.

OVERVIEW OF SUSY GUT MODELS OF NEUTRINO MIXING

2003 ◽  
Vol 18 (22) ◽  
pp. 3971-3979 ◽  
Author(s):  
S.M. BARR
Keyword(s):  
Grand Unification ◽  
Neutrino Masses ◽  
Neutrino Mixing ◽  
Neutrino Masses And Mixings

A brief review is given of some ideas for explaining neutrino masses and mixings within the context of supersymmetric grand unification. Emphasis is put on so-called lopsided models.

scholarly journals CP SYMMETRY AND FERMION MASSES IN O(10) GRAND UNIFICATION MODELS

1996 ◽  
Vol 11 (34) ◽  
pp. 2703-2713 ◽  
Author(s):  
DAN-DI WU ◽  
YUE-LIANG WU
Keyword(s):  
Coupling Constants ◽  
Grand Unification ◽  
Global Symmetry ◽  
Mass Relation ◽  
Flavor Changing ◽  
Fermion Masses ◽  
Physical Representation ◽  
Cp Symmetry ◽  
Yukawa Sector ◽  
O 10

O(10) grand unification models which do not necessarily have an extra global symmetry are discussed, taking the model with one 10-plet in the Yukawa sector as an example. A strong correlation between mass ratios and CP is found. The mass relation mt/mb=vu/vd is recovered when GW=0; and another special relation mt/mb=GE/GW appears when vd=0, where GE,W are Yukawa coupling constants and vu,d are vevs. To facilitate this discussion, a set of O(10) γ-matrices is offered based on a physical representation of the spinors and that of the vector of the SO(10) group. Flavor changing neutral currents in such models are also discussed.

scholarly journals Fermion masses and anti-grand unification

1996 ◽  
Vol 385 (1-4) ◽  
pp. 150-158 ◽  
Author(s):  
C.D Froggatt ◽  
H.B Nielsen ◽  
D.J Smith
Keyword(s):  
Grand Unification ◽  
Fermion Masses

scholarly journals A simple grand unification view of neutrino mixing and fermion mass matrices

1999 ◽  
Vol 451 (3-4) ◽  
pp. 388-396 ◽  
Author(s):  
Guido Altarelli ◽  
Ferruccio Feruglio
Keyword(s):  
Grand Unification ◽  
Fermion Mass ◽  
Neutrino Mixing ◽  
Mass Matrices

scholarly journals Hierarchical fermion masses from grand unification

1980 ◽  
Vol 95 (1) ◽  
pp. 43-46 ◽  
Author(s):  
R. Barbieri ◽  
D.V. Nanopoulos
Keyword(s):  
Grand Unification ◽  
Fermion Masses
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