Gluon jet as a probe of a long-lived colored particle at the LHC

TL;DR

This paper proposes using gluon jets as a novel method to detect and study long-lived colored particles at the LHC, offering a way to distinguish these particles from background events.

Contribution

It introduces a new approach focusing on charged track events with a gluon jet to identify long-lived colored particles, enhancing detection sensitivity.

Findings

Gluon jet events are effective in probing long-lived colored particles.

Applying velocity cuts reduces background noise significantly.

The method can be used to study properties of the long-lived particles.

Abstract

In some new physics models, there exists a long-lived colored particle. Although such a particle is expected be discovered by studying the muon-like tracks, it is not easy to discriminate hadronic events from leptonic ones at the Large Hadron Collider. We focus on the charged track events associated with a single hard gluon jet. They are sensitive to the colored long-lived particle and found to be almost free from the background after applying the velocity cut. We also study the the process to probe properties of the particle.