Projections for Dark Photon Searches at Mu3e

Bertrand Echenard, Rouven Essig, Yi-Ming Zhong

We show that dark photons (A') with masses ~10-80 MeV can be probed in the decay ${\mu }^{+}\to e^{+}{\nu }_e{\bar{\nu }}_{\mu }{A}^{\prime },A^{\prime }\to e^{+}{e}^{-}$, with the upcoming Mu3e experiment at the Paul Scherrer…