The muon anomalous magnetic moment in the reduced minimal 3-3-1 model

Abstract

We study the muon anomalous magnetic moment (g − 2) μ in the context of the reduced minimal 3-3-1 model recently proposed in the literature. In particular, its spectrum contains a doubly charged scalar (H ±± ) and gauge boson (U ±± ), new singly charged vectors (V ± ) and a Z boson, each of which might give a sizeable contribution to the (g − 2) μ . We compute the 1-loop contributions from all these new particles to the (g − 2) μ . We conclude that the doubly charged vector boson provides the dominant contribution, and by comparing our results with the experimental constraints we derive an expected value for the scale of SU(3) L ⊗ U (1) N symmetry breaking v χ ∼ 2 TeV. We also note that, if the discrepancy in the anomalous moment is resolved in the future without this model then the constraints will tighten to requiring v χ 3.7 TeV with current precision, and they will entirely rule out the model if the expected precision is achieved by the future experiment at Fermilab.

Constraining the $$Z^{\prime }$$ Z ′ mass in 331 models using direct dark matter detection

“…For complementary bounds on Z gauge bosons in 331 models and simplified models see Refs. [54][55][56][57][58][59][60] The paper is organized as follows: In Sect. 2 we briefly introduce and review the particle content and key 3-3-1LHN model.…”

Muon anomalous magnetic moment in a SU(4) ⊗ U(1)N model

“…We point out that the vector current of doubly charged gauge bosons vanishes because involve identical fields in agreement with [66]. In other words, g v11 ≡ 0, and the correction from the doubly charged is thus positive.…”

“…This is the kind of models we will treat here. Several works have considered the muon anomalous magnetic moment in 3-3-1 models [66][67][68], but there is lack of results in the context of 3-4-1 frameworks. Our goal here is to assess whether this model is capable of addressing the excess reported in the muon magnetic moment with respect to the SM prediction, and derive robust bounds on the model in light of the upcoming g-2 experiment at Fermilab.…”

Anomalous Magnetic Moment of Muon in Economical 3-3-1 Model

“…[7] by a factor of 4. This is because of difference in calculating the coupling strengths f V,A between neutrinos with charged gauge bosons.…”

“…Among new physics models, there is a class of SU(2) L → SU(3) L extension models of the SM have been studied in literature [4,5]. Particularly, the a µ anomaly has also been investigated in the context of 3-3-1 models [6,7]. In this paper we will focus on the 3-3-1 model with two Higgs triplets or the economical 3-3-1 model (E331) [5].…”