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CP violation in $K^{\pm}\toπ^0π^0π^{\pm}$ decay

Göran Fäldt·Evgeny Shabalin
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Abstract

CP violation leads to a difference between the parameters $g^+$ and $g^-$ describing the energy distributions of the charged pions produced in the $K^+ \toπ^0 π^0 π^+$ and $K^- \to π^0π^0 π^-$ decays. We study the difference $(g^+ - g^-)$ as a function of the relative contributions from the QCD-penguin and the electroweak-penguin diagrams. We find that the combination of these contributions in $(g^+ - g^-)$ is very similar to the corresponding one defining the parameter $ε'$ in the $K_L \to 2π$ decays. This observation allows a determination of the value of $(g^+ - g^-)$, using data on $ε'$.

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Göran Fäldt, Evgeny Shabalin. 2005-03-23. CP violation in $K^{\pm}\toπ^0π^0π^{\pm}$ decay. https://doi.org/10.1238/physica.regular.072a00354

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