Dark matter beams at LBNF

Understand

High-intensity neutrino beam facilities may produce a beam of light dark matter when protons strike the target.

• Searches for such a dark matter beam using its scattering in a nearby detector must overcome the large neutrino background.
• We characterize the spatial and energy distributions of the dark matter and neutrino beams, focusing on their differences to enhance the sensitivity to dark matter.
• We find that a dark matter beam produced by a $Z'$ boson in the GeV mass range is both broader and more energetic than the neutrino beam.