Constraints on Spin-Independent Nucleus Scattering with WIMP Dark Matter for CDEX and TEXONO Experiments under the Earth Attenuation Effect

Chih-Hsiang Yeh^1*, Hau-Bin Li¹, Tsz-King Henry Wong¹

¹Institute of Physics, Academia Sinica, Taipei, Taiwan

* Presenter:Chih-Hsiang Yeh, email:a9510130375@gmail.com

In our research, we investigate limits on spin-independent WIMP-nucleus scattering cross-section, considering both earth and shielding effects. Beyond the extreme cross-sections for dark matter with different masses could be blocked from reaching detectors. Our results using (1)nuclear recoil, incorporating (2)Midgal effect, (3)Bremsstrahlung, and (4)Electron recoil are presented with CDEX(underground experiment)and latest TEXONO(Surface experiment) data. In particular, the very low mass region, which is between 0.06GeV and 0.16 GeV, can be excluded by TEXONO data with the higher cross-sections that underground experiments cannot probe.

Keywords: WIMP, Direct-Detection Experiment, TEXONO, CDEX