Bounds on $Z^\prime$ from 3-3-1 model at the LHC energies

TL;DR

This paper investigates the potential to discover or constrain the $Z'$ boson predicted by the 3-3-1 model at the LHC, analyzing cross sections, distributions, and current bounds at different energies.

Contribution

It provides a systematic analysis of $Z'$ signatures in two versions of the 3-3-1 model and derives bounds and discovery prospects at LHC energies.

Findings

Derived lower bounds on $Z'$ mass from current LHC data.

Compared $Z'$ signatures in two 3-3-1 model versions.

Assessed LHC discovery potential at 14 TeV.

Abstract

The Large Hadron Collider will restart with higher energy and luminosity in 2015. This achievement opens the possibility of discovering new phenomena hardly described by the Standard Model, that is based on two neutral gauge bosons: the photon and the $Z$. This perspective imposes a deep and systematic study of models that predicts the existence of new neutral gauge bosons. One of such models is based on the gauge group $SU(3)_C \times SU(3)_L \times U(1)_N$ called 3-3-1 model for short. In this paper we perform a study with $Z^\prime$ predicted in two versions of the 3-3-1 model and compare the signature of this resonance in each model version. By considering the present and future LHC energy regimes, we obtain some distributions and the total cross section for the process $p + p \longrightarrow \ell^{+} + \ell^{-} + X$. Additionally, we derive lower bounds on $Z^\prime$ mass from the latest LHC results. Finally we analyze the LHC potential for discovering this neutral gauge boson at 14 TeV center-of-mass energy.