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

Abstract

Our aim is to establish some signatures of the extra gauge boson $Z^{\prime }$, predicted in two versions of $SU(3{)}_C\times SU(3{)}_L\times U(1{)}_X$ model and to show possible differences between these signatures. First, by considering the process $e^{+}+e^{-}⟶{\mu }^{+}+{\mu }^{-}$, we obtain some observables and next, by considering additional hadronic final states, we obtain lower bounds for $M_{Z^{\prime }}$, within 95% C.L.. We also include our preliminary results concerning $p\bar{p}$ 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 $Z^{\prime }$ predicted in the 3-3-1 model and also that it can discriminate the versions.

24 pages, 10 figures and 1 table. Accepted for publication in Eur. Phys. J. C

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