Test ofCPTsymmetry conservation inK0decays

Recent measurements have been made of several of the decay parameters of the ${\mathit{K}}^0$-${\mathit{K}}^0$¯ system: ${\mathrm{\eta }}_{+\mathrm{-}0}$, ${\mathrm{\eta }}_{+\mathrm{-}\gamma }$, Δm, ${\mathrm{\tau }}_{\mathit{S}}$, ${\mathrm{\phi }}_{+\mathrm{-}}$, ${\mathrm{\phi }}_{00}$, and ε’/ε. These measurements make it possible to place new limits on the violation of CPT symmetry. To do this we use the Bell-Steinberger relation, which relates the time derivative of the square of the kaon wave function to the sum of the partial decay rates. We evaluate each partial decay rate and discuss the experimental uncertainties.