X-Events and Their Interpretation

TL;DR

This paper discusses how doubly-charged bileptons produced at the LHC create distinctive X-shaped muon events with minimal track curvature, serving as a clear signature for the 331 model with negligible standard model background.

Contribution

It identifies a unique kinematic signature of doubly-charged bileptons at the LHC, proposing a new observable for detecting the 331 model.

Findings

X-shaped muon events are characteristic of bilepton decays.

Such events have negligible standard model background.

The signature provides a clear test for the 331 model.

Abstract

We point out that when doubly-charged bileptons are pair produced at the LHC, kinematics dictate that they are both almost at rest in the lab frame and therefore their decays lead to final state muons in a characteristic X-shape with only very tiny track curvature because of the high muon energies. Such X-events have essentially no standard model background and provide a smoking gun for the 331 model.