Charged fermion masses with Yukawa coupling strength universality

Tonasse, M. D.

doi:10.1016/s0550-3213(01)00626-5

Cited by 3 publications

(2 citation statements)

References 47 publications

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“…There are several versions of the 3-3-1 model and all of them preserve the essential features discussed above [15,17,18]. The original version of Refs.…”

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confidence: 99%

Self-interacting dark matter from a SU(3)L⊗U(1)N electroweak model

Fregolente

Tonasse

2003

Physics Letters B

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Recently it has been shown that models which consider self-interacting particles as dark matter candidates can be able to account with practically all the discrepancies between N-body simulations and astronomical observations of the galactic structure. In the present work we show that the 3-3-1 electroweak model can provide a realistic candidate to this kind of dark matter. This dark matter particle is not arbitrarily imposed and no new symmetry is needed to stabilize it.

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“…There are several versions of the 3-3-1 model and all of them preserve the essential features discussed above [15,17,18]. The original version of Refs.…”

mentioning

confidence: 99%

Self-interacting dark matter from a SU(3)L⊗U(1)N electroweak model

Fregolente

Tonasse

2003

Physics Letters B

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“…Although we have not considered the quark masses we would like to call the attention to an interesting mechanism, in the context of a 3-3-1 model, for generating the top and bottom masses at the tree level, while the masses of the other quarks and charged leptons arise at the 1-loop level, which was proposed in Ref. [29].…”

Section: Discussionmentioning

confidence: 99%

Lepton masses from a TeV scale in a 3-3-1 model

2002

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In this work, using the fact that in 3-3-1 models the same leptonic bilinear contributes to the masses of both charged leptons and neutrinos, we develop an effective operator mechanism to generate mass for all leptons. The effective operators have dimension five for the case of charged leptons and dimension seven for neutrinos. By adding extra scalar multiplets and imposing the discrete symmetry Z 9 Z 2 we are able to generate realistic textures for the leptonic mixing matrix. This mechanism requires new physics at the TeV scale.

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Seesaw tau lepton mass and calculable neutrino masses in a 3-3-1 model

Montero¹,

Pires²,

Pleitez³

2002

Phys. Rev. D

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In this work we show that in a version of the 3-3-1 model proposed by Duong and Ma, in which the introduction of a scalar sextet is avoided by adding a singlet heavy charged lepton, the lepton gains mass through a seesawlike mechanism. We also show how to generate neutrino masses at the one-loop level, and give the respective Maki-Nakagawa-Sakata mixing matrices for a set of the parameters. We also consider the effect of adding a singlet right-handed neutrino. DOI: 10.1103/PhysRevD.65.093017 PACS number͑s͒: 12.15.Ff, 12.60.Cn, 14.60.Fg, 14.60.Pq Some years ago a model with SU(3) C SU(3) L U(1) N gauge symmetry was proposed, 3-3-1 for short, in which the three lepton families transform in the same way under the gauge symmetry, i.e., ⌿ aL ϭ( a ,l a ,l a c ) L ϳ(1,3,0) with a ϭe,, ͓1,2͔. Therefore, in this model the lepton mass term transforms as (1,3,0) (1,3,0)ϭ(1,3*,0) A (1,6,0) S ; hence, in order to give mass to the charged leptons it is possible to introduce a triplet ϭ(and a symmetric sextet Sϳ(1,6,0) ͓2͔. With the triplet only, one of the charged leptons remains massless and the other two are mass degenerate. Hence, at least a sextet S has to be introduced in order to give arbitrary masses to all charged leptons. Although this implies that the model has a rather complicated Higgs scalar sector, it is interesting to stress that all the extensions of the electroweak standard model with extra Higgs scalar multiplets, such as multiHiggs doublets ͓3͔, singlets ͓4,5͔, and triplets ͓6͔, are embedded in this 3-3-1 model. In fact, under the subgroup SU(2) L U(1) Y ʚSU(3) L U(1) N the model has three scalar doublets, four singlets ͑one neutral, one singly charged, and two doubly charged͒, and a complex triplet. This sort of model also gives some insight into the family replication and into the observed value of the weak mixing angle sin 2 W Ͻ1/4. Moreover, recently the 3-3-1 models have become interesting possibilities for explaining the new value of the positive muon anomalous magnetic moment, reported by the Muon (gϪ2) Collaboration ͓7͔. The new (gϪ2) value is consistent not only with supersymmetry ͓8͔ but also with several versions of the 3-3-1 model as was shown in Ref. ͓9͔. Finally, in one version of the model it is possible to generate the top and bottom quark masses at the tree level while the other quarks and charged leptons gain mass at the one-loop level ͓10͔.The seesaw mechanism was proposed in order to understand the smallness of the neutrino masses ͓11͔. On the other hand, later, a generalization of this mechanism was introduced, which is also valid for the charged lepton masses, in the context of the minimal left-right symmetric model ͓12,13͔. Here we will show, in a 3-3-1 model, that a similar mechanism can be implemented for the case of the lepton mass and that the three neutrinos gain mass radiatively. In the case of three neutrinos the masses and mixing are almost completely determined by the charged lepton parameters. In fact, they depend only upon a coupling constant () of a quartic term of the...

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Charged fermion masses with Yukawa coupling strength universality

Cited by 3 publications

References 47 publications

Self-interacting dark matter from a SU(3)L⊗U(1)N electroweak model

Self-interacting dark matter from a SU(3)L⊗U(1)N electroweak model

Lepton masses from a TeV scale in a 3-3-1 model

Seesaw tau lepton mass and calculable neutrino masses in a 3-3-1 model

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