Exciting Prospects for Dark Matter at Large-Volume Neutrino Detectors
arxiv(2024)
摘要
We propose a new approach to search for light dark matter (DM) in the range
of keV-GeV via inelastic nucleus scattering at large-volume neutrino detectors
such as Borexino, DUNE, JUNO, and Hyper-K. The approach uses inelastic nuclear
scattering of cosmic-ray boosted DM, enabling a low-background search for DM in
these experiments. The large neutrino detectors with higher threshold can be
used since the nuclear deexcitation lines are O(10) MeV. Using a hadrophilic
dark-gauge-boson-portal model as a benchmark, we show that the nuclear
inelastic channels generally provide better sensitivity than the elastic
scattering for a large region of light DM parameter space.
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