Exploring vector dark matter via effective interactions

TL;DR

This paper investigates vector dark matter interactions with Standard Model gauge bosons using an effective field theory framework, analyzing constraints from relic density, indirect detection, and collider experiments.

Contribution

It introduces a comprehensive EFT approach for vector dark matter, considering operators up to dimension-8, and evaluates experimental sensitivities including LEP and ILC data.

Findings

Constraints on model parameters from relic density and indirect detection.

Sensitivity estimates for LEP and ILC experiments to vector DM.

Potential for future collider searches to probe effective interactions.

Abstract

We explore the properties of self-conjugate dark matter (DM) particles that predominantly interact with Standard Model electroweak gauge bosons, using an effective field theory approach. The study emphasizes effective contact interactions, invariant under the Standard Model gauge group, between vector DM and SM-neutral electroweak gauge bosons. Focusing on interaction terms up to dimension-8, we establish constraints on the model parameters based on the observed DM relic density and indirect detection signals. We also examine the prospects for dark matter-nucleon scattering in direct detection experiments. In addition, we analyze the sensitivity of low-energy LEP data to the pair production of light DM particles (with masses up to 80 GeV). Finally, we assess the potential of the proposed International Linear Collider (ILC) to probe these effective operators through the detection of DM particles produced in association with mono-photons.