Production of lepton-flavor-violating scalars through resonant positive-muon annihilation on atomic electrons

Jinhong Shen, Youpeng Wu, Zijian Wang +10

We investigate an invisible lepton-flavor-violating scalar $\ddot{I}•$ with exclusive $e-\hat{I}¼$ couplings and study its resonant production via $\hat{I}{¼}^{+}{e}^{-}\to \ddot{I}•$ in fixed-target experiments. Si…