Sub-GeV Dark Matter Search with MiniBooNE

Cosmological observations indicate that our universe contains dark matter (DM), however, we have yet to conclusively detect DM directly or measure its microscopic properties. Direct detection experiments search for a nuclear recoil interaction produced by a DM relic particle and have a sensitivity to DM particle mass down to order 1~GeV. To explore below this limit, searches for boosted dark matter in particle beams may be employed. The MiniBooNE experiment, which ran for a decade at Fermilab to measure $\nu$, $\bar{\nu}$ oscillations and interactions, conducted a dedicated run in 2014 with the Fermilab Booster 8~GeV proton beam incident on a steel beam stop. Using this beam configuration and the existing and well-understood MiniBooNE detector, the MiniBooNE-darkmatter collaboration searched for low-mass DM in nucleon recoil events. Results from this search as well as future prospects will be presented.