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arXiv · 2605.00989

$CP$ violation in neutral kaon mixing in $D^0\rightarrow K_SK_S$

Yuval Grossman·Guglielmo Papiri·Stefan Schacht
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Abstract

We study CP violation induced by neutral kaon mixing in $a_{CP}(D^0 \rightarrow K_S K_S)$. We show that the contribution from neutral kaon mixing arises only in connection with second-order weak interactions in $D$ decays. We estimate this effect to be at the $10^{-6}$ level, and thus negligible compared to current experimental sensitivity and to the expected contribution from CP violation in the charm sector.

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Yuval Grossman, Guglielmo Papiri, Stefan Schacht. 2026-05-01. $CP$ violation in neutral kaon mixing in $D^0\rightarrow K_SK_S$. https://arxiv.org/abs/2605.00989

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