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arXiv · 1903.11617

Patterns of CP violation from mirror symmetry breaking in the $\eta\to\pi^+\pi^-\pi^0$ Dalitz plot

Susan Gardner·Jun Shi
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Abstract

A violation of mirror symmetry in the $\eta\to\pi^+\pi^-\pi^0$ Dalitz plot has long been recognized as a signal of C and CP violation. Here we show how the isospin of the underlying C- and CP-violating structures can be reconstructed from their kinematic representation in the Dalitz plot. Our analysis of the most recent experimental data reveals, for the first time, that the C- and CP-violating amplitude with total isospin $I=2$ is much more severely suppressed than that with total isospin $I=0$.

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Susan Gardner, Jun Shi. 2019-03-27. Patterns of CP violation from mirror symmetry breaking in the $\eta\to\pi^+\pi^-\pi^0$ Dalitz plot. https://doi.org/10.1103/physrevd.101.115038

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