<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Z</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>Z</mml:mi><mml:mo>′</mml:mo></mml:msup></mml:math>decays with and without FCNC in 331 models

Cárcamo, Antonio; Martı́nez, R.; Ochoa, F.

doi:10.1103/physrevd.73.035007

Cited by 83 publications

(73 citation statements)

References 76 publications

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“…Indeed, if one puts |(λ 3 ω 2 )/(16π 2 v)| = v and takes |λ 3 | ∼ 0.1 − 1, then ω ∼ 3 − 10 TeV as expected in the constraints [9,18]. The resulting Dirac-mass matrix which is combined of (20) and (52) therefore gets two typical examples of the bounds:…”

Section: Radiative Corrections To MDmentioning

confidence: 99%

“…conserve L, this means that the operator (17) cannot be induced mediated by the model particles. As a fact, the economical 3-3-1 model including the alternative versions [4,5] are only extensions beyond the SM in the scales of orders of TeV [9,18]. Such processes are therefore expected mediated by heavy particles of an underlined new physics at a scale M much greater than ω which have been followed in various of grand unified theories (GUTs) [17,19,20].…”

Section: IImentioning

confidence: 99%

“…The operator (18) and its Hermitian adjoint arise from the radiative corrections mediated by the model particles, and give contributions to Majorana and Dirac mass terms M L , M R and M D for the neutrinos. The Yukawa couplings of the leptons in (7) and the relevant Higgs self-couplings in (12) are explicitly rewritten as follows…”

Section: B One-loop Level Dirac and Majorana Massesmentioning

confidence: 99%

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Neutrino masses in the economical 3-3-1 model

2007

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We show that, in frameworks of the economical 3-3-1 model, the suitable pattern of neutrino masses arises from the three quite different sources -the lepton-number conserving, the spontaneous lepton-number breaking and the explicit lepton-number violating, widely ranging over the mass scales including the GUT one:At the tree-level, the model contains three Dirac neutrinos: one massless, two large with degenerate masses in the order of the electron mass. At the one-loop level, the left-handed and right-handed neutrinos obtain Majorana masses ML,R in orders of 10 −2 −10 −3 eV and degenerate in MR = −ML, while the Dirac masses get a large reduction down to eV scale through a finite mass renormalization. In this model, the contributions of new physics are strongly signified, the degenerations in the masses and the last hierarchy between the Majorana and Dirac masses can be completely removed by heavy particles. All the neutrinos get mass and can fit the data.

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Section: Radiative Corrections To MDmentioning

confidence: 99%

Section: IImentioning

confidence: 99%

Section: B One-loop Level Dirac and Majorana Massesmentioning

confidence: 99%

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Neutrino masses in the economical 3-3-1 model

2007

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“…The procedure to cancel model anomalies imposes that quark families must be assigned to different SU(3) representation [29]. We elect the left component of the first quark family to be accommodated in SU(3) L triplet and the second and third families (m = 2, 3) to belong to the antitriplet representation, as follows:…”

Section: Modelmentioning

confidence: 99%

Vector- and scalar-bilepton pair production in hadron colliders

Barreto¹,

Coutinho²,

Borges³

2011

Phys. Rev. D

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We study the double-charged vector-bilepton pair production and double-charged scalar-bilepton pair production via+ X, where Y and S 1 are vector and scalar bileptons respectively, in the framework of the minimal version of the 3-3-1 model. We compute the photon, Z, and Z ′ s-channel contributions for the elementary process of bilepton scalar pair production, and to keep the correct unitarity behavior for the elementary qq interaction, we include the exotic quark t-channel contribution in the vector-bilepton pair production calculation. We explore a mass range for Z ′ and we fix the exotic quark mass within the experimental bounds. In this model, the vector-bilepton mass is directly related to M Z ′ and we consider scalar mass values around the vector-bilepton mass.We show that the total cross section for vector-bilepton production is 3 orders of magnitude larger than for scalar pair production for √ s = 7 TeV and 14 TeV and we obtain the number of events for the proposed LHC luminosities as a function of the bilepton mass. In addition we present some invariant mass and transverse momentum distributions. When comparing these distributions we observe quite different behavior providing the determination of the bilepton nature. We conclude that one can disentangle the production rates and that the LHC can be capable of detecting these predicted particles as a signal for new physics.

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“…For the interaction between the SM-quarks q and neutral gauge bosons, we found [7]: Table 1: Vector and Axial couplings of SM quarks and Neutral Gauge Bosons. The index m = 2, 3 labels the 3 * multiplets.…”

Section: The Couplingsmentioning

confidence: 94%

Production of the heaviest charged Higgs boson in 3-3-1 models

Ochoa¹,

Martı́nez²

2013

Proceedings of 36th International Conference on High Energy Physics — PoS(ICHEP2012)

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We study the production cross section of the heaviest hypercharge-two Higgs boson (H ± 2 ) predicted by the 3-3-1 model. Taking into account intermediate vector bosons, including a new Z ′ neutral boson, we calculate the cross section of H ± 2 pair production at CERN-LHC hadron collider. Considering Z ′ -mass of the order of 1 TeV, we found that the cross sections decreases from 100 fb to 1 × 10 −3 fb for the H ± 2 -mass range 200 -1000 GeV. We also found that for masses below the kinematic threshold (500 GeV), the cross section splits into three branches for H

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ZandZ′decays with and without FCNC in 331 models

Cited by 83 publications

References 76 publications

Neutrino masses in the economical 3-3-1 model

Neutrino masses in the economical 3-3-1 model

Vector- and scalar-bilepton pair production in hadron colliders

Production of the heaviest charged Higgs boson in 3-3-1 models

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