Is a Miracle-less WIMP Ruled Out?

Abstract

We examine a real electroweak triplet scalar field as dark matter, abandoning the requirement that its relic abundance is determined through freeze out in a standard cosmological history (a situation which we refer to as a 'miracle-less WIMP'). We extract the bounds on such a particle from collider searches, searches for direct scattering with terrestrial targets, and searches for the indirect products of annihilation. Each type of search provides complementary information, and each is most effective in a different region of parameter space. LHC searches tend to be highly dependent on the mass of the SU(2) charged partner state, and are effective for very large or very tiny mass splitting between it and the neutral dark matter component. Direct searches are very effective at bounding the Higgs portal coupling, but ineffective once it falls below ${\lambda }_{\text{eff}}\lesssim 10^{-3}$. Indirect searches suffer from large astrophysical uncertainties due to the backgrounds and $J$-factors, but do provide key information for $\sim$ 100 GeV to TeV masses. Synthesizing the allowed parameter space, this example of WIMP dark matter remains viable, but only in miracle-less regimes.

14 pages, 10 figures. Matches published version

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Cited by in corpus (8)

• The Waning of the WIMP: Endgame?
• Probing Miracle-less WIMP Dark Matter via Gravitational Waves Spectral Shapes
• Systematic approach to $B$-physics anomalies and $t$-channel dark matter
• Composite Dark Matter with Forbidden Annihilation
• Dark Matter Direct Detection in $t$-channel mediator models
• Dark Matter Freeze-out during $\mathrm{SU}(2{)}_{\mathrm{L}}$ Confinement
• Dynamical analysis of quantum matter bounces with dark sector mimickers
• Thermal Real Scalar Triplet Dark Matter