Examining the origin of dark matter mass at colliders

TL;DR

This paper explores how dark photon radiation from dark matter at the LHC can reveal the dark matter's chirality and shed light on the origin of its mass within the dark sector.

Contribution

It introduces a novel method to determine dark matter chirality through dark photon showering signatures at colliders.

Findings

LHC can distinguish dark matter chirality via photon shower patterns

Dark photon showering depends on dark matter's gauge properties

Chirality identification helps understand dark sector mass origins

Abstract

As conventional dark matter scenarios have been probed extensively so far, the physics of a light dark matter charged under a new gauge group (dark gauge group) becomes one of new research avenues in many theoretical and experimental studies. We examine properties of a dark photon showering, the radiation process of light gauge bosons from energetic dark matter particles produced at the Large Hadron Collider (LHC). This showering process provides different signatures at the LHC depending on the property of dark matter under the dark gauge group. We show that the LHC experiment can identify the chirality of a dark matter, which leads to understanding the mass origin of particles in the dark sector.