Entropy dilution from early matter domination reduces the couplings needed for multipolar dark matter to match the observed relic density, reopening regions excluded under radiation domination.
Faint Light from Dark Matter: Classifying and Constraining Dark Matter-Photon Effective Operators
3 Pith papers cite this work. Polarity classification is still indexing.
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abstract
Even if Dark Matter (DM) is neutral under electromagnetism, it can still interact with the Standard Model (SM) via photon exchange from higher-dimensional operators. Here we classify the general effective operators coupling DM to photons, distinguishing between Dirac/Majorana fermion and complex/real scalar DM. We provide model-independent constraints on these operators from direct and indirect detection. We also constrain various DM-lepton operators, which induce DM-photon interactions via RG running or which typically arise in sensible UV-completions. This provides a simple way to quickly assess constraints on any DM model that interacts mainly via photon exchange or couples to SM leptons.
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Proposes underground MeV-scale electron-beam production of millicharged or dipole fermions followed by CCD detection to access unconstrained parameter space.
Review of confining dark sectors summarizing dark matter candidates, abundance mechanisms, discovery channels, and applications to the abundance similarity puzzle.
citing papers explorer
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Multipolar Dark Matter Freeze-out in an Early Matter-Dominated Universe
Entropy dilution from early matter domination reduces the couplings needed for multipolar dark matter to match the observed relic density, reopening regions excluded under radiation domination.
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Underground Production of Electromagnetic Dark States by MeV-scale Electron Beams and Detection with CCDs
Proposes underground MeV-scale electron-beam production of millicharged or dipole fermions followed by CCD detection to access unconstrained parameter space.
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Rich Phenomenology from Simple Ingredients: A Review of Confining Dark Sectors
Review of confining dark sectors summarizing dark matter candidates, abundance mechanisms, discovery channels, and applications to the abundance similarity puzzle.