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Strong New Limits on Light Dark Matter from Neutrino Experiments
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The non-detection of GeV-scale WIMPs has led to increased interest in more general candidates, including sub-GeV dark matter. Direct detection experiments, despite their high sensitivity to WIMPs, are largely blind to sub-GeV dark matter. Recent work has shown that cosmic-ray elastic scattering with sub-GeV dark matter would both alter the observed cosmic ray spectra and produce a flux of relativistic dark matter, which would be detectable with traditional dark matter experiments as well as larger, higher-threshold detectors for neutrinos. Using data, detectors, and analysis techniques not previously considered, we substantially increase the regions of parameter space excluded by neutrino experiments for both dark matter-nucleon and dark matter-electron elastic scattering. We also show how to further improve sensitivity to light dark matter.
Forward citations
Cited by 14 Pith papers
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Primordial black holes as cosmic accelerators of light dark matter: Novel direct detection constraints
Primordial black hole evaporation generates light fermionic dark matter capable of producing electron recoils in XENONnT, LZ, and PandaX-4T, enabling new constraints on DM-electron interactions after including Earth a...
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Search for sub-GeV dark particles in $\eta\to\pi^0+\rm{invisible}$ decay
No signal found in first search for eta to pi0 plus invisible dark scalar decay, setting branching fraction limits of (1.8-5.5)x10^-5 at 90% CL and improving DM-nucleon cross section bounds by ~5 orders of magnitude.
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First Limits on Light Dark Matter Interactions in a Low Threshold Two Channel Athermal Phonon Detector from the TESSERACT Collaboration
A 0.233 g silicon athermal phonon detector with 361.5 MeV/c² rms resolution sets the strongest direct-detection limits on dark matter-nucleon cross sections for masses 44–87 MeV/c² after 12 hours of exposure.
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Migdal Ionization as a Probe of Light Dark Matter from Nuclear Transition
Migdal ionization in a germanium detector can turn reactor-produced sub-MeV dark matter into observable signals, yielding new 95% C.L. limits on the DM–proton cross section for masses 0.01–2.6 MeV.
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Migdal Ionization as a Probe of Light Dark Matter from Nuclear Transition
Migdal ionization of reactor-produced sub-MeV dark matter in TEXONO germanium yields new 95% C.L. limits on the reference DM–proton cross section for 0.01 MeV ≤ mχ ≲ 2.6 MeV.
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Direct Detection of Millicharged Particles from Supernovae
Calculations show millicharged particles from supernovae can produce over 10 electron-recoil events per year in major detectors for millicharge 10^{-9} and sub-MeV to MeV masses, improving SN cooling bounds by up to a...
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Direct Detection of Leptophobic Dark Matter with Electronic Collective Excitations
Leptophobic dark matter can excite plasmons in silicon through hadronic loops, and SENSEI data now constrain its nucleon cross section down to ~1e-31 cm^2 in the sub-MeV mass range.
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Boosted Dark Matter from Sagittarius A$^\star$
The nuclear star cluster around Sgr A* is the dominant source of gravitationally boosted dark matter in the Milky Way, with particles up to ~25,000 km/s that enhance sub-GeV detection prospects independently of the DM model.
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Sub-GeV dark matter from cosmic ray bremsstrahlung in the atmosphere
Boosted sub-GeV dark matter from atmospheric cosmic ray bremsstrahlung can be probed by direct detection and neutrino experiments, with enhanced sensitivity near vector mediator resonances.
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Primordial black holes as cosmic accelerators of light dark matter: Novel direct detection constraints
Hawking-evaporating primordial black holes could boost light dark matter to detectable energies, and the new electron-recoil constraints from XENONnT, LZ, and PandaX-4T tighten limits on its mass and cross-section.
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Dark Secrets of Baryons: Illuminating Dark Matter-Baryon Interactions with JWST
JWST ultraviolet luminosity function data currently provide the strongest upper limits on velocity-dependent (∝v^{-2}) dark matter–proton scattering for sub-GeV dark matter.
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A congruous approach with realistic cross section towards limiting sub-GeV dark matter from LUX-ZEPLIN
Using LZ nuclear recoil data, the authors derive 90% CL exclusion limits on cosmic-ray-boosted sub-GeV dark matter for two U(1)' mediator models, with energy-dependent cross sections improving the lower reach versus c...
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