Time Reversal and theK0Meson Decays

Abstract

We show that $T$ is not conserved in the $\mathrm{CP}$-nonconserving $K^0\to 2\pi$ decays by direct data analysis (rather than inferentially via $\mathrm{CPT}$) over a considerable range of values for the Wu-Yang parameters within the span of existent data. In particular, if $\frac{\left|{\eta }_{00}\right|}{\left|{\eta }_{+-}\right|}<~1.0$, then $T$ is broken. This result is independent of the final state $\pi \pi$ interaction.