Doubly charged heavy leptons at LHC via contact interactions

TL;DR

This paper investigates the production of doubly charged heavy leptons at the LHC, highlighting the dominance of contact interactions over magnetic interactions and analyzing the potential for their detection through tri-lepton signatures.

Contribution

It introduces contact interactions into the production mechanism of doubly charged leptons, showing their dominance and providing feasibility and exclusion analyses for detection at the LHC.

Findings

Contact interactions dominate production of doubly charged leptons.

Feasibility analysis shows potential for detection via tri-lepton signatures.

Exclusion plots provided for different luminosities.

Abstract

We study the production of doubly charged excited leptons at the LHC. These exotic states are predicted in extended weak isospin composite models. A recent analysis of such exotic states was based on a pure gauge model with magnetic type interactions. We include here the mechanism of contact interactions and show that this turns out to dominate the production of the doubly charged leptons. We perform a feasibility analysis of the observation of the tri-lepton signature associated with the production of the exotic doubly charged lepton simulating the response of a generic detector. We give exclusion plots in the parameter space, within statistical uncertainties, at different luminosities.