Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-03-09
Eur.Phys.J.C50:909-917,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages, 10 figures and 1 table. Accepted for publication in Eur. Phys. J. C
Scientific paper
10.1140/epjc/s10052-007-0254-2
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^- \longrightarrow \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 $p p$ 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.
Barreto Ramirez E.
Borges J. Sá
Coutinho Y. A.
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