Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Introduction to a low-mass dark matter project, ALETHEIA: A Liquid
  hElium Time projection cHambEr In dArk matter   Although Weakly Interactive Massive Particles (WIMPs) is the most discussed
DM candidate, the null-WIMPs conclusion has been consistently addressed by most
convincing experiments in the field. However, the low-mass WIMPs region (10
MeV/c$^2$ - 10 GeV/c$^2$) has not been fully exploited compared to high-mass
WIMPs (10 GeV/c$^2$ - 10 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. In this paper, we go through the
physics motivation of low-mass DM, the ALETHEIA detector's design, possible
analysis channels available for DM searches, and the latest progress we have
made recently.

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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
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The categories of this paper are: econ
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
1
The categories of this paper are: cs
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th