Early Universe in the SU(3)&lt;sub&gt;L&lt;/sub&gt;?(1)&lt;sub&gt;X&lt;/sub&gt; Electroweak Models

Long, H. N.

doi:10.3844/pisp.2016.1.14

Cited by 4 publications

(2 citation statements)

References 67 publications

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“…3-3-1 models are self-consistent if there exists only three generations due to the combined effect of triangle gauge anomalies cancellations and QCD asymptotic freedom [10][11][12][13][14]. Moreover, the model furnishes a suitable environment for neutrino masses through see-saw mechanisms [15][16][17][18][19][20][21][22][23][24][25][26][27][28], dark matter [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45], explanation of the strong CP problem in the quark sector [46,47], first-order phase transitions [48][49][50], lepton number violation processes [51][52][53][54][55][56][57]…”

Section: Introductionmentioning

confidence: 99%

Constraining flavor changing interactions from LHC Run-2 dilepton bounds with vector mediators

2016

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Within the context of vector mediators, is a new signal observed in flavor changing interactions, particularly in the neutral mesons systems K 0 −K 0 , D 0 −D 0 and B 0 −B 0 , consistent with dilepton resonance searches at the LHC? In the attempt to address this very simple question, we discuss the complementarity between flavor changing neutral current (FCNC) and dilepton resonance searches at the LHC run 2 at 13 TeV with 3.2 fb −1 of integrated luminosity, in the context of vector mediators at tree level. Vector mediators, are often studied in the flavor changing framework, specially in the light of the recent LHCb anomaly observed at the rare B decay. However, the existence of stringent dilepton bound severely constrains flavor changing interactions, due to restrictive limits on the Z mass. We discuss this interplay explicitly in the well motivated framework of a 3-3-1 scheme, where fermions and scalars are arranged in the fundamental representation of the weak SU(3) gauge group. Due to the paucity of relevant parameters, we conclude that dilepton data leave little room for a possible new physics signal stemming from these systems, unless a very peculiar texture parametrization is used in the diagonalization of the CKM matrix. In other words, if a signal is observed in such flavor changing interactions, it unlikely comes from a 3-3-1 model.

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Section: Introductionmentioning

confidence: 99%

Constraining flavor changing interactions from LHC Run-2 dilepton bounds with vector mediators

2016

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“…3-3-1 models stand for electroweak extensions of the SM, where left-handed fermions are arranged in the fundamental representation of SU (3) L . Such models can naturally explain the number of generations [5,6], might offer plausible dark matter candidates with gripping phenomenology [4,, explain neutrino masses through the seesaw mechanism [33,34], feature interesting connections to cosmology [35][36][37][38][39] and prospects to collider physics [40][41][42][43][44], among others [38,[45][46][47][48][49][50][51][52][53][54][55][56][57][58]. In this work we will focus our attention on the ecoomical 3-3-1 model, which has in its scalar sector two scalar triplets [59], and discuss the long standing discrepancy on the muon anomalous magnetic moment and the lepton flavor violating decay µ → eγ (see [60] for a recent review).…”

Section: Introductionmentioning

confidence: 99%

Muon Magnetic Moment and Lepton Flavor Violation in the Economical 3-3-1 Model

Cogollo¹

2017

Preprint

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The Δ(27) flavor 3-3-1 model with neutral leptons

Vien¹,

Hernández²,

Long³

2016

Nuclear Physics B

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We build the first 3-3-1 model based on the ∆(27) discrete group symmetry, consistent with fermion masses and mixings. In the model under consideration, the neutrino masses are generated from a combination of type-I and type-II seesaw mechanisms mediated by three heavy right-handed Majorana neutrinos and three SU (3) L scalar antisextets, respectively. Furthermore, from the consistency of the leptonic mixing angles with their experimental values, we obtain a non-vanishing leptonic Dirac CP violating phase of − π 2 . Our model features an effective Majorana neutrino mass parameter of neutrinoless double beta decay, with values m ββ = 10 and 18 meV for the normal and the inverted neutrino mass hierarchies, respectively.

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Early Universe in the SU(3)<sub>L</sub>?(1)<sub>X</sub> Electroweak Models

Cited by 4 publications

References 67 publications

Constraining flavor changing interactions from LHC Run-2 dilepton bounds with vector mediators

Constraining flavor changing interactions from LHC Run-2 dilepton bounds with vector mediators

Muon Magnetic Moment and Lepton Flavor Violation in the Economical 3-3-1 Model

The Δ(27) flavor 3-3-1 model with neutral leptons

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