LHC Phenomenology of Z′ and Z″ bosons in the SU(4)<sub>L</sub> × U(1)<sub>X</sub> little Higgs model

This paper includes two main parts. In the first part, we present generalized gauge models based on the SU (3) C ⊗ SU (4) L ⊗ U (1) X (3-4-1) gauge group with arbitrary electric charges of exotic leptons. The mixing matrix of neutral gauge bosons is analyzed, and the eigenmasses and eigenstates are obtained. The anomaly-free as well as matching conditions are discussed precisely.In the second part, we present a new development of the original 3-4-1 model [2,9]. Different from previous works, in this paper the neutrinos, with the help of the scalar decuplet H, get the Dirac masses at the tree level. The vacuum expectation value (VEV) of the Higgs boson field in the decuplet H acquiring the VEV responsible for neutrino Dirac mass leads to mixing in separated pairs of singly charged gauge bosons, namely the Standard Model(SM) W boson and K, the new gauge boson acting in the right-handed lepton sector, as well as the singly charged bileptons X and Y . Due to the mixing, there occurs a right-handed current carried by the W boson. From the expression of the electromagnetic coupling constant, ones get the limit of the sine-squared of the Weinberg angle, sin 2 θ W < 0.25 and a constraint on electric charges of extra leptons. In the limit of lepton number conservation, the Higgs sector contains all massless Goldstone bosons for massive gauge bosons and the SM-like Higgs boson. Some phenomenology is discussed.

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Neutrino masses in the SU(4)L ⊗ U(1)X electroweak extension of the Standard Model

Palacio

2016

Int. J. Mod. Phys. A

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We study the neutrino mass generation in the SU (4) L ⊗ U (1) X electroweak extension of the standard model by considering non-renormalizable dimension five effective operators. It is shown that there exist two topologies for the realizations of such an operator at the tree-level and for one of the three-family models is explore the neutrino phenomenology after extending its particle content with an SU (4) L fermion singlet and a scalar decuplet. Constraints in the available parameters space of the model are partially discussed.

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LHC Phenomenology of Z′ and Z″ bosons in the SU(4)_L × U(1)_X little Higgs model

Cited by 3 publications

References 41 publications

(g − 2)e, μ and decays eb → eaγ in a SU(4)L⊗U(1)X model with inverse seesaw neutrinos

(g − 2)e, μ and decays eb → eaγ in a SU(4)L⊗U(1)X model with inverse seesaw neutrinos

Electroweak theory based onSU(4)L⊗U(1)Xgauge group

Neutrino masses in the SU(4)L ⊗ U(1)X electroweak extension of the Standard Model

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LHC Phenomenology of Z′ and Z″ bosons in the SU(4)L × U(1)X little Higgs model

Cited by 3 publications

References 41 publications

(g − 2)e, μ and decays eb → eaγ in a SU(4)L⊗U(1)X model with inverse seesaw neutrinos

(g − 2)e, μ and decays eb → eaγ in a SU(4)L⊗U(1)X model with inverse seesaw neutrinos

Electroweak theory based onSU(4)L⊗U(1)Xgauge group

Neutrino masses in the SU(4)L ⊗ U(1)X electroweak extension of the Standard Model

Contact Info

Product

Resources

About

LHC Phenomenology of Z′ and Z″ bosons in the SU(4)_L × U(1)_X little Higgs model