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

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

2005-03-23

arxiv.org/abs/hep-ph/0503241v1

Phys.Lett. B635 (2006) 295-298

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1238/Physica.Regular.072a0035

CP violation leads to a difference between the parameters $g^+$ and $g^-$ describing the energy distributions of the charged pions produced in the $K^+ \to\pi^0 \pi^0 \pi^+$ and $K^- \to \pi^0\pi^0 \pi^-$ 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 $\epsilon'$ in the $K_L \to 2\pi$ decays. This observation allows a determination of the value of $(g^+ - g^-)$, using data on $\epsilon'$.

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