Fermion Masses and Mixing in 331 Models With Horizontal Symmetry

Tully, Matthew B.; Joshi, G. C.

doi:10.1142/s0217732398002187

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…The LEP II experiments have given the lower limits on the vector bilepton masses around 100GeV [7]. The stringent lower bounds on vector bileptons require these particles to be heavier than 850GeV and 750GeV , which were established from muonium-antimuonium conversion [8] and from fermion pair production and lepton-flavor violating processes [9], respectively.…”

Section: Introductionmentioning

confidence: 99%

Vector bileptons and the decays

2013

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Takeing into account of the constraints on the relevant parameters from the muon anomalous magnetic moment, we consider the contributions of the vector bileptons V ± and U ±± predicted by the reduced minimal 331 model to the Higgs decay channels h → γγ and Zγ. Our numerical results show that the vector bileptons can enhance the partial width Γ(h → γγ), while reduce the partial width Γ(h → Zγ), which are anti-correlated. With reasonable values of the relevant free parameters, the vector bileptons can explain the LHC data for the γγ signal. If the CM S data persists, the values of the free parameters λ 2 and λ 3 should be severe constrained.

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Section: Introductionmentioning

confidence: 99%

Vector bileptons and the decays

2013

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“…Fermion masses and the Cabibbo-Kobayashi-Maskawa mixing matrix problem have already been considered in another version of the 3-3-1 model in Ref. [10] where an SU(2) horizontal symmetry was imposed and all masses of the first family vanish.…”

Section: Introductionmentioning

confidence: 99%

Charged fermion masses with Yukawa coupling strength universality

Tonasse

2002

Nuclear Physics B

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We consider the problem of the ordinary charged fermion mass patterns in the framework of a version of the 3-3-1 electroweak gauge model, which includes charged heavy leptons. The masses of the top and the bottom quarks are given at the tree level. All the other charged fermions get their masses at the one loop level. The Yukawa coupling strength can be universal. The model is compatible with a mechanism for neutrino mass generation proposed by other authors.

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“…Furthermore, it is noted that the flavor changing neutral current (FCNC) [12] as well as CP(T) violation [13] through the lepton and quark parts appears in this case. It is known that FCNC can be avoided by taking into account the horizontal symmetry in addition to the 331 model [14].…”

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confidence: 99%

Note on Triangle Anomalies and Assignment of Singlet in 331-Like Model

2002

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It is pointed out that in the 331−like model which uses both fundamental and complex conjugate representations for an assignment of the representations to the left-handed quarks and the scalar representation to their corresponding right-handed counterparts, the nature of the scalar should be taken into account in order to make the fermion triangle anomalies in the theory anomaly-free, i.e. renormalizable in a sense with no anomalies, even after the spontaneous symmetry breaking.

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Fermion Masses and Mixing in 331 Models With Horizontal Symmetry

Cited by 6 publications

References 13 publications

Vector bileptons and the decays

Vector bileptons and the decays

Charged fermion masses with Yukawa coupling strength universality

Note on Triangle Anomalies and Assignment of Singlet in 331-Like Model

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