On Anomaly-Free Dark Matter Models

Abstract

We investigate the predictions of anomaly-free dark matter models for direct and indirect detection experiments. We focus on gauge theories where the existence of a fermionic dark matter candidate is predicted by anomaly cancellation, its mass is defined by the new symmetry breaking scale, and its stability is guaranteed by a remnant symmetry after the breaking of the gauge symmetry. We find an upper bound on the symmetry breaking scale by applying the relic density and perturbative constraints. The anomaly-free property of the theories allows us to perform a full study of the gamma lines from dark matter annihilation. We investigate the correlation between predictions for final radiation processes and gamma lines. Furthermore, we demonstrate that the latter can be distinguished from the continuum gamma ray spectrum.

21 pages, 9 figures. v2: minor changes to the text, references added, version to appear in PRD

References in corpus (12)

• The Tevatron at the Frontier of Dark Matter Direct Detection
• Maverick dark matter at colliders
• Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S
• Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Scalar Simplified Models for Dark Matter
• Gamma Ray Signals from Dark Matter: Concepts, Status and Prospects
• Characterising dark matter searches at colliders and direct detection experiments: Vector mediators
• Deducing the nature of dark matter from direct and indirect detection experiments in the absence of collider signatures of new physics
• Constraining Dark Sectors at Colliders: Beyond the Effective Theory Approach
• On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC Part III: Analysis for the $t$-channel
• Improved limits for Higgs-portal dark matter from LHC searches
• Z' Mediated Dark Matter Models for the Galactic Center Gamma-Ray Excess