Revisiting $C$ and $CP$ Violation in $η\to π^+π^-π^0$ Decay

The decay $η \to π^{+} π^{-} π^{0}$ is an ideal process in which to study flavor-conserving $C$ and $C P$ violation beyond the Standard Model. We deduce the $C$ - and $C P$ -odd quark operators that contribute to $η \to π^{+} π^{-} π^{0}$ originating from the mass-dimension 6 Standard Model effective field theory. The corresponding hadron-level operators that generate a non-vanishing $I = 0$ amplitude at order $p^{6}$ in the chiral effective theory are presented for the first time, in addition to the leading order operatorsascribed to the $I = 2$ final state. By fitting the KLOE-2 and the most recent BESIII experimental data, we determine the coefficients of the lowest order $I = 0$ and $I = 2$ amplitudes and estimate the potential new physics energy scale. We also perform an impact study of the future $η \to π^{+} π^{-} π^{0}$ experiments.

Revisiting $C$ and $C P$ Violation in $η \to π^{+} π^{-} π^{0}$ Decay

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Revisiting $C$ and $C P$ Violation in $η \to π^{+} π^{-} π^{0}$ Decay

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Revisiting CC and CPCP Violation in η→π+π−π0η→π+π−π0 Decay

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Revisiting CC and CPCP Violation in η→π+π−π0η→π+π−π0 Decay

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Revisiting $C$ and $C P$ Violation in $η \to π^{+} π^{-} π^{0}$ Decay

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AI智能校验

Revisiting $C$ and $C P$ Violation in $η \to π^{+} π^{-} π^{0}$ Decay

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AI智能校验