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Boosted Dark Matter Driven by Cosmic Rays and Diffuse Supernova Neutrinos
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Direct detection of light dark matter can be significantly enhanced by up-scattering of dark matter with energetic particles in the cosmic ambient. This boosted dark matter flux can reach kinetic energies up to tens of MeV, while the typical kinetic energies of GeV mass dark matter particles in the Milky Way halo are of the order of keV. Dark matter boosted by energetic diffuse supernova background neutrinos can be detected only through nuclear or electron scattering in ground-based detectors requiring a non-zero interaction of dark matter with nucleon or electron, in addition to its interaction with neutrino. However, in the presence of dark matter-nucleon (electron) interaction, the scattering of dark matter with cosmic rays is unavoidable. Thus, we consider boosted dark matter resulting from diffuse supernova neutrinos as well as cosmic protons (electrons) considering both energy-dependent and energy-independent scattering cross-sections between dark matter and standard model particles. We explore this scenario in dark matter detectors such as XENONnT and neutrino detectors like Super-Kamiokande.
Forward citations
Cited by 5 Pith papers
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Primordial black holes as cosmic accelerators of light dark matter: Novel direct detection constraints
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Probing Supernova Neutrino Boosted Dark Matter with Collective Excitation
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Inelastic Scattering Effects on Attenuation of Boosted Dark Matter
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.
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Dark Matter Heating of Compact Stars Beyond Capture: A Relativistic Framework for Energy Deposition by Particle Beams
A new relativistic formalism computes capture and energy deposition of directed particle beams in compact stars, applied to blazar-boosted dark matter heating of white dwarfs and neutron stars.
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Cosmic-ray-electron boosted light dark matter: Implications of LZ 2025 data
Using LZ 2025 data, cosmic-ray-electron boosted sub-MeV dark matter is constrained at levels at or below the previous XENONnT reach, with the strongest gains claimed for light mediators.
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