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Neutrinos from Earth-Bound Dark Matter Annihilation
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A sub-component of dark matter with a short collision length compared to a planetary size leads to efficient accumulation of dark matter in astrophysical bodies. We analyze possible neutrino signals from the annihilation of such dark matter and conclude that in the optically thick regime for dark matter capture, the Earth provides the largest neutrino flux. Using the results of the existing searches, we consider two scenarios for the neutrino flux, from stopped mesons and prompt higher-energy neutrinos. In both cases we exclude some previously unexplored parts of the parameter space (dark matter mass, its abundance, and the scattering cross section on nuclei) by recasting the existing neutrino searches.
Forward citations
Cited by 3 Pith papers
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Complementary Planetary Spectroscopy Probes of Dark Matter
Dark matter annihilation energy deposited in planetary atmospheres and interiors, compared against existing UV airglow and heat flow measurements, yields new sub-GeV scattering constraints and long-lived mediator reach.
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Constraints on Strongly-Interacting Dark Matter from the James Webb Space Telescope
JWST NIRSpec dark calibration images exclude previously allowed high-cross-section parameter space for sub-GeV dark matter coupled to an ultralight dark photon, for subcomponent fractions as low as about 0.01%.
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Searching for MeV-mass neutrinophilic Dark Matter with Large Scale Dark Matter Detectors
Xenon-based dark matter detectors, especially DARWIN, could detect neutrinos from MeV-mass dark matter that annihilates to the third neutrino mass eigenstate, with projected sensitivity competitive with Super-Kamiokande.
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