  We explore the sensitivity of the Deep Underground Neutrino Experiment (DUNE)
near detector and the proposed DUNE-PRISM movable near detector to sub-GeV dark
matter, specifically scalar dark matter coupled to the Standard Model via a
sub-GeV dark photon. We consider dark matter produced in the DUNE target that
travels to the detector and scatters off electrons. By combining searches for
dark matter at many off-axis positions with DUNE-PRISM, sensitivity to this
scenario can be much stronger than when performing a measurement at one on-axis
position.

High Energy Physics - Phenomenology;High Energy Physics - Experiment