Collider Constraints on Dipole-Interacting Dark Matter

TL;DR

This paper investigates collider and relic density constraints on dipole-interacting dark matter, finding that for parameters explaining DAMA, the relic density aligns with cosmological data, with collider limits being significant mainly for light WIMPs.

Contribution

It provides a comprehensive analysis of collider and relic density constraints on magnetic and electric dipole dark matter, highlighting parameter regions compatible with DAMA signals.

Findings

Relic density for DAMA-compatible couplings matches cosmological observations.

Collider constraints are significant for WIMPs lighter than about 10 GeV.

Constraints are less restrictive for WIMPs above 10 GeV.

Abstract

Dark matter which interacts through a magnetic or electric dipole moment is an interesting possibility which may help to resolve the discrepancy between the DAMA annual modulation signal and the null results of other searches. In this article we examine relic density and collider constraints on such dark matter, and find that for couplings needed to explain DAMA, the thermal relic density is generically in the right ballpark to account for cosmological measurements. Collider constraints are relevant for light WIMPs, but less constraining that direct searches for masses above about 10 GeV.