The MUSE experiment at PSI: Status and Plans

Abstract

{The MUSE experiment at the Paul Scherrer Institut (PSI) is part of a suite of experiments that aim to resolve the proton radius puzzle. MUSE is particularly interesting because it attempts to determine the proton radius through simultaneous measurements of muon-proton scattering and electron-proton scattering, in addition to measuring these reactions with both positive and negative leptons. This not only reduces systematic uncertainties but also provides sensitivity to two-photon exchange contributions which may be responsible for some of the discrepancies seen in earlier experiments. MUSE has almost completed its commissioning phase and is scheduled to start data collection this fall. We report on the current status and plans of the MUSE experiment.