EPJ Web Conf.
Volume 258, 2022A Virtual Tribute to Quark Confinement and the Hadron Spectrum (vConf21)
|Number of page(s)||10|
|Published online||11 January 2022|
Direct CP violation and the ΔI = 1/2 rule in K → ππ decay in the Standard Model
Computational Science Institute, Brookhaven National Laboratory, Upton, New York, USA.
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Published online: 11 January 2022
We discuss the RBC & UKQCD collaborations’ recent  lattice calculation of ϵ′, the measure of direct CP-violation in kaon decays. This result significantly improves on our previous 2015 calculation, with nearly 4× the statistics and more reliable systematic error estimates. We discuss how our results demonstrate the Standard Model origin of the ΔI = 1/2 rule, and present our plans for future calculations.
© The Authors, published by EDP Sciences, 2022
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