Testing keV sterile neutrino dark matter in future direct detection experiments

Abstract

We determine constraints on sterile neutrino warm dark matter through direct detection experiments, taking XENON100, XENON1T and DARWIN as examples. If keV-scale sterile neutrinos scatter inelastically with bound electrons of the target material, an electron recoil signal is generated. This can be used to set limits on the sterile neutrino mass and its mixing with the active sector. While not competitive with astrophysical constraints from X-ray data, the constraints are the first direct laboratory bounds on sterile neutrino warm dark matter, and will be in some parts of parameter space the strongest limits on keV-scale neutrinos.

5 pages, 3 figures; v2: background analysis improved, DARWIN experiment added. It matches published version

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• Direct Detection Signals from Absorption of Fermionic Dark Matter
• Direct Detection of Dark Matter -- APPEC Committee Report
• Solar neutrino flux at keV energies
• Prospects for Finding Sterile Neutrino Dark Matter at KATRIN
• Solar Neutrino Scattering with Electron into Massive Sterile Neutrino
• Shedding New Light on Sterile Neutrinos from XENON1T Experiment
• Phenomenology of keV scale sterile neutrino dark matter with $S_4$ flavor symmetry
• Heavy sterile neutrino in dark matter searches
• Impact of texture zeros on dark matter and neutrinoless double beta decay in inverse seesaw
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• Scattering of low energy neutrinos and antineutrinos by atomic electrons
• Absorption of Fermionic Dark Matter via the Scalar Portal
• MSSM WIMPs-nucleon cross section for E${}_{\chi }<$ 500 GeV
• Opening up New Parameter Space for Sterile Neutrino Dark Matter
• Lepton Number Violating Electron Recoils in a $U(1{)}_{B-L}$ Model with Non-Standard Interactions