Observation of the decay $D^0\to K^{-}{\pi }^{+}{e}^{+}{e}^{-}$

BaBar Collaboration, J. P. Lees, others

We report the observation of the rare charm decay $D^0\to K^{-}{\pi }^{+}{e}^{+}{e}^{-}$, based on $468$ fb${}^{-1}$ of $e^{+}{e}^{-}$ annihilation data collected at or close to the center-of-mass…