Complementary probe of dark matter blind spots by lepton colliders and gravitational waves

TL;DR

This paper investigates how future lepton colliders and gravitational wave observations can jointly probe dark matter blind spots within the inert doublet model, enhancing detection prospects beyond current methods.

Contribution

It introduces a combined approach using collider signatures and gravitational waves to explore dark matter blind spots, with detailed simulations at future lepton colliders.

Findings

Future lepton colliders can effectively probe dark matter blind spots.

Gravitational wave signals from phase transitions complement collider searches.

The inert doublet model remains consistent with current experimental constraints.

Abstract

We study how to unravel the dark matter blind spots by phase transition gravitational waves in synergy with collider signatures at electroweak one-loop level taking the inert doublet model as an example. We perform a detailed Monte Carlo study at the future lepton colliders in the favored parameter space, which is consistent with current dark matter experiments and collider constraints. Our studies demonstrate that the Circular Electron Positron Collider and other future lepton colliders have the potential to explore the dark matter blind spots.