Light Dark Matter through Resonance Scanning

TL;DR

This paper introduces a novel mechanism called resonance scanning for producing light dark matter out of equilibrium, which could explain its relic abundance via the Higgs portal while aligning with current experimental limits.

Contribution

The paper proposes a new out-of-equilibrium production mechanism for light dark matter involving resonance scanning, expanding the theoretical understanding of dark matter genesis.

Findings

Resonance scanning can produce the correct dark matter relic abundance.

The mechanism is compatible with existing experimental constraints.

It involves the evolution of dark matter mass in the early Universe.

Abstract

We propose a new out-of-equilibrium production mechanism of light dark matter: resonance scanning. If the dark matter mass evolved in the early Universe, resonant production may have occurred for a wide range of light dark matter masses today. We show that the dark matter relic abundance may be produced through the Higgs portal, in a manner consistent with current experimental constraints.