An Elusive Vector Dark Matter

Abstract

Even though the sensitivity of direct dark matter search experiments reach the level about $10^{-45}{\mathrm{cm}}^2$, there is no confident signal of dark matter been observed. We point out that, if dark matter is a vector boson, the null result in direct dark matter search experiments may due to the destructive effects in dark-matter-nucleon elastic scattering. We illustrate the scenario using a modified Higgs portal model that includes exotic quarks. The significant cancellation can occur for certain mass gap between heavy quark and dark matter. As a result, the spin-independent dark-matter-nucleon elastic scattering is so suppressed that the future direct search experiments can hardly observe the signal of dark matter.

11 pages, 5 figures

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• Minimal Spin-one Isotriplet Dark Matter
• Geometric Dark Matter
• Vector dark matter from split SU(2) gauge bosons
• DAMPE Excess from Leptophilic Vector Dark Matter: Model Independent Approach
• Vector dark matter production from catalyzed annihilation
• Hidden SU(2)_D vector dark matter with a scalar septuplet
• Phenomenology of the Hidden SU(2) Vector Dark Matter Model