MUSE: Overview & Outlook

In 2010, an approximately 5σ disagreement between the proton's charge radius measured using muonic hydrogen spectroscopy and e-based measurements disrupted the nuclear physics community. The discrepancy, now known as the proton radius puzzle, prompted a number of experiments, including the MUon Scattering Experiment (MUSE). MUSE operates at the Paul Scherrer Institute, where a mixed beam of electrons, muons, and pions enable simultaneous measurement of electron-proton and muon-proton scattering from a liquid hydrogen target. Using leptons of positive and negative charge states enables MUSE to investigate physics measurements relevant to the puzzle, including lepton universality and two-photon exchange. In this talk, I will provide an overview of MUSE and present where the experiment stands in the context of the experiment's physics objectives.