Wave-Packet Effects: A Solution for Isospin Anomalies in Vector-Meson Decay

Kenzo Ishikawa, Osamu Jinnouchi, Kenji Nishiwaki +1

There is a long-standing anomaly in the ratio of the decay width for $\psi (3770)\to D^0\overline{D^0}$ to that for $\psi (3770)\to D^{+}{D}^{-}$ at the level of $9.5\sigma$. A similar anomaly exis…