Improved measurement of the strong-phase difference ${\delta }_D^{K\pi }$ in quantum-correlated $D\bar{D}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +568

The decay $D\to K^{-}{\pi }^{+}$ is studied in a sample of quantum-correlated $D\bar{D}$ pairs, based on a data set corresponding to an integrated luminosity of 2.93\,fb${}^{-1}$ collected at…