A Possibility of Determining the WIMP Mass by Using the Angular Recoil-Energy Spectra from Directional Direct Dark Matter Detection Experiments

Chung-Lin Shan

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arXiv · 2208.05193

A Possibility of Determining the WIMP Mass by Using the Angular Recoil-Energy Spectra from Directional Direct Dark Matter Detection Experiments

Chung-Lin Shan

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Abstract

In this article, as an extension of our study on the angular distribution of the recoil flux of WIMP-scattered target nuclei, we demonstrate a possibility of determining the mass of incident halo WIMPs by using or combining "ridge-crater" structures of the angular recoil-energy spectra with different target nuclei observed in directional direct Dark Matter detection experiments. Our simulation results show that, for a WIMP mass of only a few tens GeV, the stereoscopic angular recoil-flux distributions of both of light and heavy target nuclei would have a (longitudinally) "ridge-like" structure. However, once the WIMP mass is as heavy as a few hundreds GeV, the angular recoil-flux distributions of heavy target nuclei would in contrast show a (latitudinally) "crater-like" structure.

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Chung-Lin Shan. 2022-08-10. A Possibility of Determining the WIMP Mass by Using the Angular Recoil-Energy Spectra from Directional Direct Dark Matter Detection Experiments. https://arxiv.org/abs/2208.05193

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