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 $\varphi$ with exclusive $e-\mu$ couplings and study its resonant production via ${\mu }^{+}{e}^{-}\to \varphi$ in fixed-target experiments. Since…