Quark-lepton symmetric model at the LHC

TL;DR

This paper explores the quark-lepton symmetric model at the LHC, focusing on potential discovery of new particles like Z' bosons, exotic leptons, and scalar diquarks, and finds that the LHC can probe significant new parameter space.

Contribution

It provides a detailed analysis of the LHC's capability to detect new particles predicted by the quark-lepton symmetric model with TeV-scale symmetry breaking.

Findings

LHC has already explored some parameter space for Z' bosons and exotic leptons.

Future LHC runs can probe additional regions for scalar diquarks.

The model predicts new particles accessible at current or near-future collider energies.

Abstract

We investigate the quark-lepton symmetric model of Foot and Lew in the context of the Large Hadron Collider (LHC). In this `bottom-up' extension to the Standard Model, quark-lepton symmetry is achieved by introducing a gauged `leptonic colour' symmetry which is spontaneously broken above the electroweak scale. If this breaking occurs at the TeV scale, then we expect new physics to be discovered at the LHC. We examine three areas of interest: the Z$'$ heavy neutral gauge boson, charge $\pm1/2$ exotic leptons, and a colour triplet scalar diquark. We find that the LHC has already explored and/or will explore new parameter space for these particles over the course of its lifetime.