Charged Lepton Flavor Violating (cLFV) processes are thought to be powerful tools to investigate the physics beyond the Standard Model (SM) as all of them are extremely suppressed in the framework of SM even if we take the neutrino oscillation into account. There are intensive efforts ongoing to find signals of cLFV processes at high-power proton accelerator facilities in Japan, the US, and Switzerland. We report these experimental efforts and their status in this presentation.
The author would like to thank the MEG & MEG II, COMET, and Mu2e collaborations for providing materials presented in this article.
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