Abstract
The ATLAS detector data on di-lepton production is used in order to impose constraints on Z′ boson masses associated with a variety of 3-3-1 and E6 motivated Z′ models. Lower mass bounds for the different models are established at 95% confidence level. Our numerical analysis is extrapolated up to 14 TeV, and further to 30 TeV and 100 TeV, for a broad range of luminosities. Some of our results can be compared with the ATLAS published bounds, being, for those cases, in fairly good agreement. We also report the vector and axial charges for all the 3-3-1-motivated Z′ models without exotic electric charges for leptons, known in the literature. To the best of our knowledge most of this charges were not reported before.
Highlights
In the nineties, some work pointed out to the conclusion that universality must not be taken for granted for models with physics beyond the SM
The three family model with exotic electrons was introduced in the literature in ref. [16], a classification of 3-3-1 models without exotic electric charges was done in refs. [17]; and the so called economical 3-3-1 model appeared in ref. [18]
For 3-3-1 models, the most important constraints come from the flavor changing neutral currents (FCNC); in consequence, it is important to establish the models for which the LHC and/or the FCNC constraints are dominant; that is, which kind of constraints exclude a wider region in the parameter space
Summary
The right handed fields are ucaL ∼ (3∗, 1, −2/3), dcaL ∼ (3∗, 1, 1/3), XicL ∼ (3∗, 1, 4/3) and YLc ∼ (3∗, 1, −5/3), where a = 1, 2, 3 is the quark family index and there are three exotic quarks, two with electric charge −4/3 (Xi) and other with electric charge 5/3 (Y ) This version is called minimal in the literature, because its lepton content is just the one present in the SM. Its fermion structure is given by 3S2 + S3 + 2S4 This model was introduced for first time in the literature in ref. Model C: named in the literature “model with unique lepton generation one” (three different lepton families). The fermion weak charges were presented in the literature in ref. The fermion weak charges for this model were presented in the literature in ref. Its fermion structure is given by 3(S3 + S6)
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