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arXiv · 1705.05462

Correlations of $ε^{\prime}_K/ε_K$ with $K \to πν\overlineν$ in Models of New Physics

Teppei Kitahara
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Abstract

Recent calculations have pointed to a 2.8 $σ$ tension between data on $ε^{\prime}_K / ε_K$ and the standard-model (SM) prediction. Several new physics (NP) models can explain this discrepancy, and such NP models are likely to predict deviations of $\mathcal{B}(K\to πν\overlineν)$ from the SM predictions, which can be probed precisely in the near future by NA62 and KOTO experiments. We present correlations between $ε^{\prime}_K / ε_K$ and $\mathcal{B}(K\to πν\overlineν)$ in two types of NP scenarios: a box dominated scenario and a $Z$-penguin dominated one. It is shown that different correlations are predicted and the future precision measurements of $K \to πν\overlineν$ can distinguish both scenarios.

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Teppei Kitahara. 2017-06-02. Correlations of $ε^{\prime}_K/ε_K$ with $K \to πν\overlineν$ in Models of New Physics. https://arxiv.org/abs/1705.05462

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