An Experiment to Search for Light Dark Matter in Low-Energy ep Scattering

Understand

Anomalous production of low-energy photons from the galactic center have fueled speculations on the nature and properties of dark matter particles.

• In particular, it has been proposed that light scalars may be responsible for the bulk of the matter density of the universe, and that they couple to ordinary matter through a light spin-1 boson.
• If this is the case, then such particles may be produced in the quasi-elastic low-energy scattering of electrons off protons.
• We present a proposal for an experiment to search for this process and assess its viability.