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arXiv · 1410.0918

An Elusive Vector Dark Matter

Chuan-Ren Chen·Yu-Kuang Chu·Ho-Chin Tsai
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Abstract

Even though the sensitivity of direct dark matter search experiments reach the level about $10^{-45}~{\rm cm}^2$, 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.

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Chuan-Ren Chen, Yu-Kuang Chu, Ho-Chin Tsai. 2014-10-03. An Elusive Vector Dark Matter. https://doi.org/10.1016/j.physletb.2014.12.043

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