The low-mass WIMPs region (100s MeV/c$^2$ - 10 GeV/c$^2$) has not been fully exploited comparing to high-mass WIMPs (10 GeV/c$^2$ - 1 TeV/c$^2$) experiments which implement liquid xenon or argon TPCs (Time Projection Chambers). The ALETHEIA experiment aims to hunt for low-mass WIMPs with liquid helium-filled TPCs. We would like to show you a description here but the site won’t allow us.
Abstract: Dark Matter (DM) is one of the most critical questions to be understood andanswered in fundamental physics today. Observations with varied astronomicaland cosmological technologies already pinned down that DM exists in theUniverse, the Milky Way, and the Solar System. However, the understanding of DMunder the language of elementary physics is still in progress. DM directdetection aims to test the interactive cross-section between galactic DMparticles and an underground detector's nucleons. Although Weakly InteractiveMassive Particles (WIMPs) is the most discussed DM candidate, the null-WIMPsconclusion has been consistently addressed by most convincing experiments inthe field. The low-mass WIMPs region (100s MeV/c$^2$ - 10 GeV/c$^2$) has notbeen fully exploited comparing to high-mass WIMPs (10 GeV/c$^2$ - 1 TeV/c$^2$)experiments which implement liquid xenon or argon TPCs (Time ProjectionChambers). The ALETHEIA experiment aims to hunt for low-mass WIMPs with liquidhelium-filled TPCs. In this paper, we go through the physics motivation oflow-mass DM, the ALETHEIA detector's design, a series of R&D programs thatshould be launched to address a liquid helium TPC's functionality, and possibleanalysis channels available for DM searches.
Submission history
From: Junhui Liao [view email][v1] Wed, 3 Mar 2021 03:55:35 UTC (5,176 KB)
[v2]Tue, 9 Mar 2021 04:06:47 UTC (5,176 KB)
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