For sub-GeV dark matter, the light and heavy mediator mass limits in direct detection are separated by up to three orders of magnitude in mediator mass, enabling precise sensitivity calculations for Si, Ge, and DAMIC-M targets.
Detection of Light Dark Matter With Optical Phonons in Polar Materials
4 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
We show that polar materials are excellent targets for direct detection of sub-GeV dark matter due to the presence of gapped optical phonons as well as acoustic phonons with high sound speed. We take the example of Gallium Arsenide (GaAs), which has the properties needed for experimental realization, and where many results can be estimated analytically. We find GaAs has excellent reach to dark photon absorption, can completely cover the freeze-in benchmark for scattering via an ultralight dark photon, and is competitive with other proposals to detect sub-MeV dark matter scattering off nuclei.
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background 2
method 1
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hep-ph 4years
2026 4verdicts
UNVERDICTED 4representative citing papers
Bilayer graphene enables sub-MeV dark matter detection via electronic excitations with small exposure and sidereal modulation signatures.
Curvature of the angular spectrum of dark matter events in directional 2D detectors encodes the dark matter mass scale.
New upper bounds on millicharged particles (masses 10-100 keV, charges down to 5e-13) from the AGB-to-HB star ratio in globular clusters, improving prior limits by up to two orders of magnitude.
citing papers explorer
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Electronic Direct Detection of Light Dark Matter with Intermediate-Mass Mediators
For sub-GeV dark matter, the light and heavy mediator mass limits in direct detection are separated by up to three orders of magnitude in mediator mass, enabling precise sensitivity calculations for Si, Ge, and DAMIC-M targets.
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Extracting Dark-Matter Mass from Angular Scanning
Curvature of the angular spectrum of dark matter events in directional 2D detectors encodes the dark matter mass scale.