Description
This study presents a search for Dark Photon signals at the Short-Baseline Near Detector (SBND), recently commissioned at Fermilab. Dark Photons, predicted in minimal extensions of the Standard Model with an extra U(1) gauge symmetry, can be a source of electron positron pairs, producing broader and more energetic shower topologies than neutrino-induced backgrounds. Exploiting SBND’s excellent imaging capabilities, kinematic and timing-based discriminants are investigated to suppress backgrounds and probe a previously unexplored region of the dark photon parameter space.
