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Broad-Range Directional Detection of Light Dark Matter in Cryogenic Ice
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abstract
We propose hexagonal ice (H$_2$O) as a new target for light dark matter (DM) direct detection. Ice, a polar material, is suitable for single phonon detection through DM scattering for which we consider light dark photon and light scalar mediator models. We report a rate sensitivity down to a DM mass of $\sim$keV, constituting a broader mass range than other promising candidates. We find better sensitivity for near-term experimental thresholds from the presence of high-frequency phonons. These advantages, and ice's availability, make it highly promising for single-phonon detection.
Forward citations
Cited by 3 Pith papers
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Spin-Dependent Scattering of Sub-GeV Dark Matter: Models and Constraints
A new calculation of spin-dependent sub-GeV dark matter phonon scattering shows only the light scalar mediator model retains testable parameter space, conditional on the supernova trapping window.
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Coherence from interference: a solvable model of sub-GeV dark matter-nucleus scattering
In an exactly solvable 1D lattice, coherent and incoherent DM-nucleus structure factors differ only by a crystal-momentum delta function that becomes unimportant for n≥2 phonons, validating hybrid Inc+LW rate calculations.
- First High-Throughput Evaluation of Dark Matter Detector Materials
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