DarkSide-PS: Search for the Dark Photon via Neutral Meson Decay at the T9 Beamline
Shortlisted proposal for CERN's Beamline for Schools 2026 competition (Team "Ribera del Deuterium"). We designed an experiment to search for the Dark Photon (A') — a hypothetical mediator of a Dark Sector — through the exotic decay π⁰ → γA' at the PS T9 beamline. The setup features a tungsten target, a dipole magnetic spectrometer, Delay Wire Chambers for tracking, and a 4×4 ECAL, all simulated in Geant4. The proposal probes Dark Sector physics in the 100–150 MeV mass range, complementary to high-energy colliders.