ΔI=3/2 and ΔI=1/2 channels of K→ππ decay at the physical point with periodic boundary conditions

URN to cite this document:: urn:nbn:de:bvb:355-epub-554577
DOI to cite this document:: 10.5283/epub.55457

Blum, Thomas

; Boyle, Peter A. ; Hoying, Daniel

; Izubuchi, Taku ; Jin, Luchang

; Jung, Chulwoo

; Kelly, Christopher ; Lehner, Christoph ; Soni, Amarjit ; Tomii, Masaaki

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Date of publication of this fulltext: 09 Feb 2024 06:39

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Abstract

We present a lattice calculation of the K -> pi pi matrix elements and amplitudes with both the Delta I = 3/2 and 1/2 channels and epsilon', the measure of direct CP violation. We use periodic boundary conditions (PBC), where the correct kinematics of K -> pi pi can be achieved via an excited two-pion final state. To overcome the difficulty associated with the extraction of excited states, our ...