Measurement of $y_{CP}$ in $D^0-{\overline{D}}^0$ oscillation using quantum correlations in $e^{+}{e}^{-}\to D^0{\overline{D}}^0$ at $\sqrt{s}$ = 3.773\,GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +407

We report a measurement of the parameter $y_{CP}$ in $\ensuremath{D^0}\xspace-\ensuremath{\overline{D}^{0}}\xspace$ oscillations performed by taking advantage of quantum coherence…