Scalar coupling limits and diphoton Higgs decay from LHC in an<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:msup><mml:mo stretchy="false">)</mml:mo><mml:mo>′</mml:mo></mml:msup></mml:math>model with scalar dark matter

Martı́nez, R.; Nisperuza, Jorge; Ochoa, F.; Rubio, Juan; Sierra, Chaparro

doi:10.1103/physrevd.92.035016

Cited by 20 publications

(22 citation statements)

References 36 publications

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“…From the previous analysis of the BRs (see figures [14][15], H 2 decays in W W , ZZ and tt are the main candidates as search channels. Consequently, we proceed by testing the gluon-gluon induced cross section of such channels against the LHC exclusion limits in figure 19.…”

Section: Hallmark Lhc Signatures From U(1) Higgs Statesmentioning

confidence: 99%

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Z ′, Higgses and heavy neutrinos in U(1)′ models: from the LHC to the GUT scale

Accomando

Corianò

Rose

et al. 2016

J. High Energ. Phys.

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We study a class of non-exotic minimal U(1) extensions of the Standard Model, which includes all scenarios that are anomaly-free with the ordinary fermion content augmented by one Right-Handed neutrino per generation, wherein the new Abelian gauge group is spontaneously broken by the non-zero Vacuum Expectation Value of an additional Higgs singlet field, in turn providing mass to a Z state. By adopting the B − L example, whose results can be recast into those pertaining to the whole aforementioned class, and allowing for both scalar and gauge mixing, we first extract the surviving parameter space in presence of up-to-date theoretical and experimental constraints. Over the corresponding parameter configurations, we then delineate the high energy behaviour of such constructs in terms of their stability and perturbativity. Finally, we highlight key production and decay channels of the new states entering the spectra of this class of models, i.e., heavy neutrinos, a second Higgs state and the Z , which are amenable to experimental investigation at the Large Hadron Collider. We therefore set the stage to establish a direct link between measurements obtainable at the Electro-Weak scale and the dynamics of the underlying model up to those where a Grand Unification Theory embedding a U(1) can be realised.

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Section: Hallmark Lhc Signatures From U(1) Higgs Statesmentioning

confidence: 99%

“…We consider three right-handed neutrinos, one for each family, as predicted by an anomaly free and flavour universal Abelian extension. See [12][13][14][15] for some non-universal examples.…”

Section: Jhep07(2016)086mentioning

confidence: 99%

Z ′, Higgses and heavy neutrinos in U(1)′ models: from the LHC to the GUT scale

Accomando

Corianò

Rose

et al. 2016

J. High Energ. Phys.

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show abstract

“…The models are only self-consistent if there exist exactly three generations of fermions as a result of the triangle gauge anomalies and QCD asymptotic freedom [229,414,433]. Moreover, they can host a dark matter candidate [230,423,[429][430][431][434][435][436][437][438][439][440][441][442][443][444][445], generate neutrino masses [295-299, 446, 447], among other things [448][449][450][451][452][453][454][455][456].…”

mentioning

confidence: 99%

A call for new physics: The muon anomalous magnetic moment and lepton flavor violation

2018

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We review how the muon anomalous magnetic moment (g − 2) and the quest for lepton flavor violation are intimately correlated. Indeed the decay µ → eγ is induced by the same amplitude for different choices of in-and outgoing leptons. In this work, we try to address some intriguing questions such as:Which hierarchy in the charged lepton sector one should have in order to reconcile possible signals coming simultaneously from g − 2 and lepton flavor violation?What can we learn if the g − 2 anomaly is confirmed by the upcoming flagship experiments at FERMILAB and J-PARC, and no signal is seen in the decay µ → eγ in the foreseeable future? On the other hand, if the µ → eγ decay is seen in the upcoming years, do we need to necessarily observe a signal also in g − 2?.In this attempt, we generally study the correlation between these observables in a detailed analysis of simplified models. We derive master integrals and

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“…Their suitability has been shown in addressing quark masses [8], dark matter [9,10] [11] and lepton masses [12], where light fermions acquire masses through radiative corrections. However, by doing a slight modification in adding an additional doublet, a completely new scheme emerges with interesting texture matrices from which the FMH can be obtained naturally.…”

Section: Introductionmentioning

confidence: 99%

Mass problem in the Standard Model

Martı́nez

Mantilla

2018

EPJ Web Conf.

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Abstract. We propose a new SU(3) C ⊗ SU(2) L ⊗ U(1) Y ⊗ U(1) X gauge model which is non universal respect to the three fermion families of the Standard Model. We introduce additional one top-like quark, two bottom-like quarks and three right handed neutrinos in order to have an anomaly free theory. We also consider additional three right handed neutrinos which are singlets respect to the gauge symmetry of the model to implement see saw mechanism and give masses to the light neutrinos according to the neutrino oscillation phenomenology. In the context of this horizontal gauge symmetry we find mass ansatz for leptons and quarks. In particular, from the analysis of solar, atmospheric, reactor and accelerator neutrino oscillation experiments, we get the allow region for the Yukawa couplings for the charge and neutral lepton sectors according with the mass squared differences and mixing angles for the two neutrino hierarchy schemes, normal and inverted.

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Scalar coupling limits and diphoton Higgs decay from LHC in anU(1)′model with scalar dark matter

Cited by 20 publications

References 36 publications

Z ′, Higgses and heavy neutrinos in U(1)′ models: from the LHC to the GUT scale

Z ′, Higgses and heavy neutrinos in U(1)′ models: from the LHC to the GUT scale

A call for new physics: The muon anomalous magnetic moment and lepton flavor violation

Mass problem in the Standard Model

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