Progress of muonium-to-antimuonium conversion experiment

Abstract

The muonium-to-antimuonium conversion is one of the most interesting charged lepton flavor violating processes forbidden in the Standard Model while new physics beyond the Standard Model might allow its existence and offer signals for the next-generation high intensity muon experiments. The proposed Muonium-to-Antimuonium Conversion Experiment (MACE) aims at searching for this process with a sensitivity to be improved by more than two orders of magnitude compared to the latest experimental limit. In this presentation, we summarize the recent progress of MACE.