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Diurnal Effect of Sub-GeV Dark Matter Boosted by Cosmic Rays

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arxiv 2005.09480 v2 pith:KD25JVMY submitted 2020-05-19 hep-ph hep-ex

Shao-Feng Ge , Jiang-Lai Liu , Qiang Yuan , Ning Zhou This is my paper · ORCID
classification hep-phhep-ex
keywords diurnalboostedcosmicallowdarkdetectiondirecteffect
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We point out a new type of diurnal effect for the cosmic ray boosted dark matter (DM). The DM-nucleon interactions not only allow the direct detection of DM with nuclear recoils, but also allow cosmic rays to scatter with and boost the nonrelativistic DM to higher energies. If the DM-nuclei scattering cross sections are sufficiently large, the DM flux is attenuated as it propagates through the Earth, leading to a strong diurnal modulation. This diurnal modulation provides another prominent signature for the direct detection of boosted sub-GeV DM, in addition to signals with higher recoil energy.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Probing Supernova Neutrino Boosted Dark Matter with Collective Excitation

    hep-ph 2025-01 conditional novelty 7.0 of 10

    Galactic supernova neutrino boosted dark matter can produce plasmon excitations in silicon detectors, improving sub-MeV dark matter sensitivity by 3 to 4 orders of magnitude over Super-K.

  2. Inelastic Scattering Effects on Attenuation of Boosted Dark Matter

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Resonant excitation of nucleons into Δ(1232) during Earth passage is a non-negligible attenuation channel for boosted dark matter at E_χ ≈ 1–2 GeV, lowering the PandaX-4T upper bound on σ̄_n in the heavy-mediator regime.

  3. Migdal Ionization as a Probe of Light Dark Matter from Nuclear Transition

    hep-ph 2026-07 conditional novelty 6.0 of 10

    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.

  4. Direct Detection of Leptophobic Dark Matter with Electronic Collective Excitations

    hep-ph 2025-10 conditional novelty 6.0 of 10

    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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