Direct $CP$ violation of three bodies decay process from the resonance effect

Gang Lü, Yan-Lin Zhao, Liang-Chen Liu +1

The physical state of $\rho$-$\omega$-$\varphi$ mesons can be mixed by the unitary matrix. The decay processes of $\omega \to {\pi }^{+}{\pi }^{-}$ and $\varphi \to {\pi }^{+}{\pi }^{-}$ are from the isospin sym…