M. D. Tonasse

Calculable lepton masses, seesaw relations, and four neutrino mixings in a 3-3-1 model with an extra U(1) symmetry

We propose a scheme in which the masses of the heavier leptons obey seesaw type relations. The light lepton masses, except the electron and the electron neutrino ones, are generated by one loop level radiative corrections. We work in a version of the 3-3-1 electroweak model that predicts singlets (charged and neutral) of heavy leptons beyond the known ones. An extra U(1){sub {omega}} symmetry is introduced in order to avoid the light leptons getting masses at the tree level. The electron mass induces an explicit symmetry breaking at U(1){sub {omega}}. We discuss also the mixing matrix among four neutrinos. The new energy scale required is not higher than a few TeV.

Search for the Higgs boson H-2(0) at LHC in 3-3-1 model

We present an analysis of production and signature of neutral Higgs boson (

Neutral Higgs bosons in the SU(3)(L) x U(1)(N) model

H_{2}^{0}

Probing doubly charged Higgs in e + e − Colliders in 3-3-1 Model

) on the version of the 3-3-1 model containing heavy leptons at the Large Hadron Collider. We studied the possibility to identify it using the respective branching ratios. Cross section are given for the collider energy,

Heavy Charged Leptons in an

\sqrt{s} =

SU(3)_L\otimes U(1)_N

14 TeV. Event rates and significances are discussed for two possible values of integrated luminosity, 300 fb

Model

^{-1}

Possibilities for charged Higgs bosons at the LHC in a SU(3)

and 3000 fb

_L\otimesU(1)_N

^{-1}

Model

.