A few of our group’s projects extend beyond Jefferson Lab. One such project is the MUSE Experiment, being conducted at the Paul Scherrer Institute (PSI) in Switzerland. The Experiment is lead by GW’s Prof. Downie, and will attempt to resolve the proton radius puzzle by measuring the proton radius twice; once with electrons and once with unstable muon particles.
Bill and Peter have contributed to a recent paper, published in the journal Physical Review C, documenting studies of the MUSE beam-line. The incoming particles in MUSE are actually a secondary beam, produced by primary collisions of protons on a production target. The MUSE beam-line transports muons, pions, electrons and positrons to the MUSE proton target. It is crucial for the experiment that the muon and electron beams have identical properties.