Stable or Unstable Light Dark Matter

TL;DR

This paper explores models of light dark matter around 10 GeV, including stable self-interacting and unstable long-lived variants, to explain observed anomalies and their stability properties.

Contribution

It introduces a simple $Z_2$ scalar dark matter model and a related unstable model to address light dark matter and anomalous events.

Findings

A stable self-interacting dark matter model with $Z_2$ symmetry.

An unstable long-lived dark matter model explaining Kolar events.

Potential implications for dark matter detection and astrophysical anomalies.

Abstract

We consider the case of light dark matter ($\sim 10$ GeV). We discuss a simple $Z_2$ model of scalar self-interacting dark matter, as well as a related model of unstable long-lived dark matter which can explain the anomalous Kolar events observed decades ago.