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Progress Towards an ab initio, Standard Model Calculation of Direct CP-Violation in K-decays

We discuss the RBC & UKQCD collaboration's progress towards a first-principles calculation of direct CP-violation in the Standard Model via K ->pi pi decays. In particular we focus upon the calculation of the I=0 channel amplitude A_0, for which obtaining physical kinematics requires more sophisticated techniques than those used for the I=2-channel decay. We discuss our chosen techniques along with preliminary demonstrations of their application to simpler lattice quantities, and finally discuss our progress in generating the large-volume, physical-pion-mass ensembles that will be used to perform the A_0 calculation.

preprint2013arXivOpen access
Christopher Kelly
hep-lat
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Christopher Kelly

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