Probing the doubly-charged Higgs with Muonium to Antimuonium Conversion Experiment

Understand

The spontaneous muonium-to-antimuonium conversion is one of the interesting charged lepton flavor violation processes.

• MACE is the next generation experiment to probe such a phenomenon.
• In models with a triplet Higgs to generate neutrino masses, such as Type-II seesaw and its variant, this process can be induced by the doubly-charged Higgs contained in it.
• In this article, we study the prospect of MACE to probe these models via the muonium-to-antimuonium transitions.