Direct CP violation and the ΔI=1/2 rule in K→ππ decay from the standard model

URN to cite this document:: urn:nbn:de:bvb:355-epub-454444
DOI to cite this document:: 10.5283/epub.45444

Abbott, R. ; Blum, T. ; Boyle, P. A. ; Bruno, M.

; Christ, N. H. ; Hoying, D. ; Jung, C. ; Kelly, C. ; Lehner, C. ; Mawhinney, R. D. ; Murphy, D. J. ; Sachrajda, C. T. ; Soni, A. ; Tomii, M. ; Wang, T.

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Date of publication of this fulltext: 01 Apr 2021 13:57

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Abstract

We present a lattice QCD calculation of the Delta I = 1/2, K -> pi pi decay amplitude A(0) and epsilon', the measure of direct CP violation in K -> pi pi decay, improving our 2015 calculation [1] of these quantities. Both calculations were performed with physical kinematics on a 32(3) x 64 lattice with an inverse lattice spacing of a(-1) = 1.3784(68) GeV. However, the current calculation includes ...