Dark Photon Searches Using Displaced Vertices at Low Energy Colliders
Excluded region in the plane resulting from presently available data. Electron beam dump experiment covers the region of low masses and very low couplings, down to ~. For higher masses and lower couplings limits come mainly from meson decays and electron-nucleon scattering experiments and to B-factories data (plot courtesy of S. Andreas). The plot reports also the projections for the experiments presently under construction. For details on single experiments see .