Determination of U-spin breaking parameters with an amplitude analysis of the decay $D^0\to K_{\mathrm{L}}^0{\pi }^{+}{\pi }^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +605

We present a study of the resonant structure of the decay $D^0\to K_{\mathrm{L}}^0{\pi }^{+}{\pi }^{-}$, using quantum-correlated $D^0{\bar{D}}^0$ data produced at $\sqrt{s}=3.773$ GeV. The data sampl…