Connection ofg−2μ, electroweak, dark matter, and collider constraints on 331 models

Abstract

In this paper we compute all contributions to the muon magnetic moment stemming from several 3-3-1 models, namely, minimal 331, 331 with right-handed neutrinos, 331 with heavy neutral leptons, 331 with charged exotic leptons, 331 economical and 331 with two Higgs triplets. Further, we exploit the complementarity among current electroweak, dark matter and collider constraints to outline the relevant parameter space of the models capable of explaining the anomaly. Lastly, assuming that the experimental anomaly has been otherwise resolved, we derive robust 1σ bounds using the current and projected measurements.

Dark matter complementarity and theZ′portal

“…Since the Z interacts with the muon, it also gives rise to corrections to the muon magnetic moment through Fig. 1(d), with a contribution found to be [18,35],…”

“…[35]. Notice that, depending on the relative values of the vector and axial couplings, the contribution can be either positive or negative.…”

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

“…One can use that information to enforce the doubly charged boson correction to g − 2 to lie below the current and projected error bars to derive tight constraints on the scale of symmetry breaking of the minimal 331 model since the mass of such a boson is directly related to the latter [230].…”

“…Due to the enlarged gauge symmetry, the fermionic generations are accommodated in the fundamental representation of SU (3) L , i.e triplets. Since the SM spectrum should be reproduced, the triplet must contain the SM doublet, but the arbitrariness of the third component leads to a multitude of models based on this gauge symmetry [206,229,230,[414][415][416][417][418][419][420][421][422][423][424][425][426][427][428][429][430][431][432].…”

A Simple Model of Gauged Lepton and Baryon Charges

“…The leptoquarks possessing B = -1 as we put are in order to cancel the baryonic anomalies. Note that in the framework of the 3-3-1 models, the family number achieved has a different origin, which is a consequence of the new weak-isospin symmetry SU(3) L with a corresponding enlargement of the lepton and quark representations (see, for recent works, Kelso et al, 2014;Cogollo et al, 2014;Dong et al, 2014;2012). It is noteworthy that the [SU(2)] 2 U(1) Y anomaly was removed because of Y(F L ) = 0 and this is why we assumed q j = -q k = 1/2.…”