Search for new physics in e⁺e^- final states with an invariant mass of 10-20 MeV using the ARIEL electron accelerator

The DarkLight collaboration is constructing an experiment to search for a new boson which couples to leptons and has a mass in the 10-20 MeV range. Such a new boson could address various observed anomalies including the muon g-2 discrepancy and the "X17" excess. This result will be complementary to other existing and planned experiments, which have largely relied on pion couplings, since at DarkLight the production and decay of the new boson rely solely on leptonic interactions. This new experiment will be hosted at the ARIEL e-linac at TRIUMF, a low-energy (30-50 MeV) electron accelerator able to deliver up to 10 mA of current to the DarkLight fixed target. This talk will discuss the experiment status and plans as well as why its physics program is so well suited to the TRIUMF electron accelerator.