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arXiv · 2409.01486

Shedding Light on Mirror Dark Matter Using CDEX

M. Tousif Raza
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Abstract

Mirror dark matter, a hidden-sector counterpart to the Standard Model with identical particle content, could be detectable through photon-mirror-photon kinetic mixing $(\epsilon)$. We present new constraints from CDEX-10 low-energy recoil data, establishing $\epsilon < 2 \times 10^{-10}$ for mirror nuclear dark matter in the 10--56 GeV mass range. Projections for CDEX-300 (with 95 days of exposure) show significantly improved sensitivity, reaching $\epsilon < 3.75 \times 10^{-11}$ for a local mirror halo temperature below 0.3 keV, surpassing existing constraints from LUX and positronium decays. These results demonstrate CDEX-300's unique capability to probe kinetic-mixing parameter space, providing stringent constraints on mirror dark matter models.

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M. Tousif Raza. 2024-09-02. Shedding Light on Mirror Dark Matter Using CDEX. https://arxiv.org/abs/2409.01486

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