Lightening Gravity-Mediated Dark Matter

Abstract

We revisit the scenario of a massive spin-2 particle as the mediator for communicating between dark matter of arbitrary spin and the Standard Model. Taking the general couplings of the spin-2 particle in the effective theory, we discuss the thermal production mechanisms for dark matter with various channels and the dark matter self-scattering. For WIMP and light dark matter cases, we impose the relic density condition and various experimental constraints from direct and indirect detections, precision measurements as well as collider experiments. We show that it is important to include the annihilation of dark matter into a pair of spin-2 particles in both allowed and forbidden regimes, thus opening up the consistent parameter space for dark matter. The benchmark models of the spin-2 mediator are presented in the context of the warped extra dimension and compared to the simplified models.

39 pages, 8 figures, v2: references and unitarity bounds added, v3: Accepted for publication in European Physical Journal C

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Cited by in corpus (17)

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• Interplay between neutrino and gravity portals for FIMP dark matter
• Dark Matter and Leptogenesis from Gravitational Production
• Exothermic Dark Matter for XENON1T Excess
• Kaluza-Klein FIMP Dark Matter in Warped Extra-Dimensions
• Non-minimally Coupled Vector Boson Dark Matter
• Graviton-photon production with a massive spin-2 particle
• FIMP Dark Matter in Clockwork/Linear Dilaton Extra-Dimensions
• Probing some photon portals to new physics at intensity frontier experiments
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• Metastable Conformal Dark Matter
• Resonant probing spin-0 and spin-2 dark matter mediators with fixed target experiments
• Spin-dependence of Gravity-mediated Dark Matter in Warped Extra-Dimensions
• Positivity Bounds on Higgs-Portal Dark Matter
• Muon $g-2$ Anomaly from a Massive Spin-2 Particle
• Gravitational SIMPs