2011/12/02 by P. A. Boyle, N. Garron, Boyle, P. A. +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph
paper · pdf · doi:10.48550/arxiv.1112.0537
11 pages, XXIX International Symposium on Lattice Field Theory, July 10 -16 2011, Squaw Valley, Lake Tahoe, California
arxiv created 2011/12/02 · openalex publication_date 2011/12/02 · arxiv updated 2011/12/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We compute the renormalization factors of four-quark operators needed for the study of K→ππ decay in the ΔI=3/2 channel. We evaluate the Z-factors at a low energy scale (μ0=1.145 \GeV) using four different non-exceptional RI-SMOM schemes on a large, coarse lattice (a∼ 0.14\fm) on which the bare matrix elements are also computed. Then we compute the universal, non-perturbative, scale evolution matrix of these renormalization factors between μ0 and 3\GeV. We give the numerical results for the different steps of the computation in two different non-exceptional lattice schemes, and the connection to \msbar at 3\GeV is made using one-loop perturbation theory.