Observation of $D^0\to {\rho }^0\gamma$ and search for $CP$ violation in radiative charm decays

Belle Collaboration, T. Nanut, A. Zupanc +156

We report the first observation of the radiative charm decay $D^0\to {\rho }^0\gamma$ and the first search for $CP$ violation in decays $D^0\to {\rho }^0\gamma$, $\varphi \gamma$, and $\overline{K}{}^{\ast 0}\gamma$, u…