Supercool Composite Dark Matter Beyond 100 TeV

TL;DR

This paper explores a model where dark matter is a composite particle interacting via a dilaton, with supercooling enabling very high mass scales up to a million TeV, and discusses its testability through telescopes and gravitational waves.

Contribution

It introduces a novel supercooled confining sector model for dark matter with ultra-high masses and analyzes its experimental and observational signatures.

Findings

Dark Matter masses can reach up to 10^6 TeV in this scenario.

The model is compatible with current experimental constraints.

It predicts observable signals in telescopes and gravitational wave detectors.

Abstract

Dark Matter could be a composite state of a confining sector with an approximate scale symmetry. We consider the case where the associated pseudo-Goldstone boson, the dilaton, mediates its interactions with the Standard Model. When the confining phase transition in the early universe is supercooled, its dynamics allows for Dark Matter masses up to $10^6$ TeV. We derive the precise parameter space compatible with all experimental constraints, finding that this scenario can be tested partly by telescopes and entirely by gravitational waves.