Branching fraction measurement of $J/\psi \to K_S{K}_L$ and search for $J/\psi \to K_S{K}_S$

BESIII Collaboration, M. Ablikim, M. N. Achasov +441

Using a sample of $1.31\times 10^9$ $J/\psi$ events collected with the BESIII detector at the BEPCII collider, we study the decays of $J/\psi \to K_S{K}_L$ and $K_S{K}_S$. The br…