Extra Neutral Gauge Boson from Two Versions of the 3-3-1 Model in Future Linear Colliders

Our aim is to establish some signatures of the extra gauge boson Z , predicted in two versions of SU(3)C × SU(3)L × U(1)X model and to show possible differences between these signatures. First, by considering the process e+e −→ μ+μ, we obtain some observables and next, by considering additional hadronic final states, we obtain lower bounds for MZ′ , within 95% C.L.. We also include our preliminary results concerning pp̄ and pp collisions in order to support our conclusions about the possibility to discriminate the various versions of 3-3-1 model. From our analysis we conclude that linear colliders can show a clear signature for the existence of Z ′ predicted in the 3-3-1 model and also that it can discriminate the versions. PACS: 12.60.Cn,13.66.De,13.66.Fg,14.70.Pw [email protected], [email protected], [email protected]