SNO data combined with CANDU reactor production excludes spin-dependent χ-nucleon cross sections above ~10^{-33} cm² for m_χ ≤ 1.5 MeV.
First Limits on Light Dark Matter Interactions in a Low Threshold Two Channel Athermal Phonon Detector from the TESSERACT Collaboration
3 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We present results of a search for spin-independent dark matter-nucleon interactions in a 1 cm$^2$ by 1 mm thick (0.233 gram) high-resolution silicon athermal phonon detector operated above ground. For interactions in the substrate, this detector achieves a r.m.s. baseline energy resolution of 361.5 $\pm$ 0.4 MeV/$c^2$, the best for any athermal phonon detector to date. With an exposure of 0.233g $\times$ 12 hours, we place the most stringent constraints on dark matter masses between 44 and 87 MeV/$c^2$, with the lowest unexplored cross section of 4 $\times 10^{-32}$ cm$^2$ at 87 MeV/$c^2$. We employ a conservative salting technique to reach the lowest dark matter mass ever probed via direct detection experiment. This constraint is enabled by two-channel rejection of low-energy backgrounds that are coupled to individual sensors.
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Sucrose crystals function as a phonon detector with scintillation for particle detection in sub-GeV dark matter searches.
Bilayer graphene enables sub-MeV dark matter detection via electronic excitations with small exposure and sidereal modulation signatures.
citing papers explorer
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Novel Constraints on Spin-Dependent Light Dark Matter Scattering
SNO data combined with CANDU reactor production excludes spin-dependent χ-nucleon cross sections above ~10^{-33} cm² for m_χ ≤ 1.5 MeV.
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The SWEET project: probing sugar crystals for direct dark matter searches
Sucrose crystals function as a phonon detector with scintillation for particle detection in sub-GeV dark matter searches.
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Dive deeper with SUBMARINE: SUB-Mev dArk matter diRect detectIon using bilayer grapheNE
Bilayer graphene enables sub-MeV dark matter detection via electronic excitations with small exposure and sidereal modulation signatures.