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Dark matter directionality revisited with a high pressure xenon gas detector

Journal of High Energy Physics, 92, 2015

An observation of the anisotropy of dark matter interactions in a direction-sensitive detector would provide decisive evidence for the discovery of galactic dark matter. Directional information would also provide a crucial input to understanding its distribution in the local Universe. Most of the existing directional dark matter detectors utilize particle tracking methods in a low-pressure gas time projection chamber. These low pressure detectors require excessively large volumes in order to be competitive in the search for physics beyond the current limit. In order to avoid these volume limitations, we consider a novel proposal, which exploits a columnar recombination effect in a high-pressure gas time projection chamber. The ratio of scintillation to ionization signals observed in the detector carries the angular information of the particle interactions.

Mohlabeng*, Gopolang; Kong*, Kyoungchul; Li, Jin; Para, Adam; Yoo, Jonghee * KU Authors

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