Revisiting $C$ and $CP$ Violation in $\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$ Decay

Jun Shi, Jian Liang, Susan Gardner

The decay $\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$ is an ideal process in which to study flavor-conserving $C$ and $CP$ violation beyond the Standard Model. We deduce the $C$- and $CP$-odd quark operators…