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CP Conserving and Violating Contributions to $K_L\toπ^+π^-ν\barν$

C. Q. Geng·I. J. Hsu·Y. C. Lin
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Abstract

We study both CP conserving and violating contributions to the decay $K_L\toπ^+π^-ν\barν$. We find that the decay branching ratio is dominated by the CP conserving part. In the standard CKM model, we estimate that for $m_t\sim 174\ GeV$, the branching ratio due to the CP conserving (violating) contributions can be as large as $4.4 \times 10^{-13}$ ($1.0\times 10^{-14}$).

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C. Q. Geng, I. J. Hsu, Y. C. Lin. 1994-06-15. CP Conserving and Violating Contributions to $K_L\toπ^+π^-ν\barν$. https://doi.org/10.1103/physrevd.50.5744

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