A similar idea is the muon g-2 magnetic moment measurement: https://phys.org/news/2017-06-muon-g-begun-phantom-particles.html https://phys.org/news/2017-06-muon

A similar idea is the muon g-2 magnetic moment measurement: https://phys.org/news/2017-06-muon-g-begun-phantom-particles.html https://phys.org/news/2017-06-muon-g-begun-phantom-particles... It goes back to 1959, with ever more accurate measurements: http://library.cern/archives/CERN_archive/guide/experimental_physics/SC/isamuon http://library.cern/archives/CERN_archive/guide/experimental...