ABSTRACT:
Dark sectors, which introduce new particles neutral under the Standard Model, arise in many scenarios of New Physics. These particles would only interact feebly with ordinary matter, and could easily have escaped detection in past experimental searches. This possibility has recently received much attention in the context of dark matter models, introducing dark sector particles charged under a new force. The corresponding gauge boson, the dark photon, must have a mass in the MeV-GeV range to explain recently observed anomalies, making it accessible to low-energy experiments. In this talk, I'll review the motivation and phenomenology of dark sectors, and discuss recent and future experiments designed to search for these particles.