Volume 396 -
The 38th International Symposium on Lattice Field Theory
(LATTICE2021) -
Plenary presentation
Direct CP violation and the $\Delta I=1/2$ rule in $K\to \pi \pi$ decay in the Standard Model
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Pre-published on:
May 16, 2022
Published on:
July 08, 2022
Abstract
We discuss the RBC & UKQCD collaborations' recent lattice calculation of $\epsilon'$, the measure of direct CP-violation in kaon decays. This result significantly improves on our previous 2015 calculation, with nearly 4$\times$ the statistics and more reliable systematic error estimates. We discuss how our results demonstrate the Standard Model origin of the $\Delta I=1/2$ rule, and present our plans for future calculations.
DOI: https://doi.org/10.22323/1.396.0008
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.