The Continuum Dark Matter Zoo

Abstract

We generalize the recently proposed continuum dark matter model to the case where the dark matter consists of a spin-$1/2$ or spin-$1$ gapped continuum. We construct simple continuum analogs of weakly interacting massive particles annihilating through the $Z$ portal. We discuss all existing experimental constraints, with the strongest bounds arising from indirect detection and limits on continuum decays from the cosmic microwave background. Our models are phenomenologically viable for gap scales of $60$-$200$ GeV (spin-$1/2$) and $35$-$90$ GeV (spin-$1$), owing to the strong kinematic suppression of direct detection bounds which is unique to continuum states. We comment on future prospects for detection and suggest directions for further continuum model building.

16 + 8 pages, 3 figures; v2: added references to similar work in Introduction; v3: added comments on other experimental bounds in section 3.2.2, version accepted for publication in JHEP

References in corpus (12)

• Unparticle Physics
• Another Odd Thing About Unparticle Physics
• General Constraints on Dark Matter Decay from the Cosmic Microwave Background
• Cosmological constraints on exotic injection of electromagnetic energy
• Anomalies, Anomalous U(1)'s and generalized Chern-Simons terms
• Toward (Finally!) Ruling Out Z and Higgs Mediated Dark Matter Models
• Electroweak Breaking on a Soft Wall
• The synergy between CMB spectral distortions and anisotropies
• Z-portal dark matter
• Anomaly driven signatures of new invisible physics at the Large Hadron Collider
• A New Direction in Dark-Matter Complementarity: Dark-Matter Decay as a Complementary Probe of Multi-Component Dark Sectors
• Strategies for Probing Non-Minimal Dark Sectors at Colliders: The Interplay Between Cuts and Kinematic Distributions

Cited by in corpus (3)

• Continuous Spectrum on Cosmological Collider
• Cosmological Dark Matter from a Bulk Black Hole
• Undecay