# A4 symmetry and lepton masses and mixing

@article{Koide2007A4SA, title={A4 symmetry and lepton masses and mixing}, author={Yoshio Koide}, journal={The European Physical Journal C}, year={2007}, volume={52}, pages={617-623} }

AbstractStimulated by Ma’s idea, which explains the tribimaximal neutrino mixing by assuming an A4 flavor symmetry, a lepton mass matrix model is investigated. A Frogatt–Nielsen-type model is assumed, and the flavor structures of the masses and mixing are caused by the VEVs of SU(2)L singlet scalars φiu and φid (i=1,2,3), which are assigned to 3
and (1
,1
’,1
”) of A4, respectively. Possible charged lepton and neutrino mass spectra and mixing are investigated.

## 16 Citations

S4 flavor symmetry embedded into SU(3) and lepton masses and mixing

- Physics
- 2007

Based on the assumption that an S4 flavor symmetry is embedded into SU(3), a lepton mass matrix model is investigated. A Froggatt-Nielsen type model is assumed, and the flavor structures of the…

A New S 4 Flavor Symmetry in 3-3-1 Model with Neutral Fermions

- Physics
- 2014

A new S 4 flavor model based on SU(3) C ⊗ SU(3) L ⊗ U(1) X gauge symmetry responsible for fermion masses and mixings is constructed.Theneutrinos get smallmasses fromonly an antisextet of SU(3)L which…

Lepton masses in a minimal model with triplet Higgs bosons and S 3 flavor symmetry

- Physics
- 2008

Viable neutrino and charged lepton masses and mixings are obtained by imposing a S{sub 3}xZ{sub 4}xZ{sub 3} flavor symmetry in a model with a few additional Higgs. We use two SU(2){sub L} triplet…

A4flavor symmetry and neutrino phenomenology

- Physics
- 2008

It has been shown that tribimaximal mixing can be obtained by some particular breaking pattern of the A{sub 4} symmetry, wherein the extra A{sub 4} triplet Higgs scalars pick up certain fixed vacuum…

The interplay between GUT and flavour symmetries in a Pati-Salam × S4 model

- Physics
- 2010

Both Grand Unified symmetries and discrete flavour symmetries are appealing ways to describe apparent structures in the gauge and flavour sectors of the Standard Model. Both symmetries put…

Non-Abelian discrete flavor symmetries

- Physics
- 2007

This is an incomplete survey of some non-Abelian discrete symmetries which have been used recently in attempts to understand the flavor structure of leptons and quarks. To support such symmetries,…

Embedding A(4) into SU(3) x U(1) flavor symmetry: large neutrino mixing and fermion mass hierarchy in the SO(10) GUT

- Physics
- 2009

We give an explanation of both the fermion mass hierarchy and the large lepton mixing angles in the context of a grand unified flavor and gauge theory (GUTF). Starting from an (SU(3) ? U(1))F flavor…

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