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arXiv · 1811.11415

Constraints on Bosonic Dark Matter with Low Threshold Germanium Detector at Kuo-Sheng Reactor Neutrino Laboratory

Manoj Kumar Singh·Lakhwinder Singh·Mehmet Agartioglu·Vivek Sharma·Venktesh Singh·Henry Tsz-king Wong
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Abstract

We report results from searches of pseudoscalar and vector bosonic super-weakly interacting massive particles (super-WIMP) in the TEXONO experiment at the Kuo-Sheng Nuclear Power Station, using 314.15 kg days of data from $n$-type Point-Contact Germanium detector. The super-WIMPs are absorbed and deposit total energy in the detector, such that the experimental signatures are spectral peaks corresponding to the super-WIMP mass. Measured data are compatible with the background model, and no significant excess of super-WIMP signals are observed. We derived new upper limits on couplings of electrons with the pseudoscalar and vector bosonic super-WIMPs in the sub-keV mass region, assuming they are the dominant contributions to the dark matter density of our galaxy.

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Manoj Kumar Singh, Lakhwinder Singh, Mehmet Agartioglu, Vivek Sharma, Venktesh Singh, Henry Tsz-king Wong. 2019-01-17. Constraints on Bosonic Dark Matter with Low Threshold Germanium Detector at Kuo-Sheng Reactor Neutrino Laboratory. https://doi.org/10.1016/j.cjph.2019.01.006

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