Lattice calculation of matrix elements relevant for Delta I=1/2 rule and epsilon-prime

1999/03/15 by D. Pekurovsky, Pekurovsky, D., G. Kilcup +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #hep-lat

paper · pdf · doi:10.48550/arxiv.hep-lat/9903025

RevTeX, 5 pages, 5 figures, uses epsf, proceedings from DPF'99 conference

arxiv created 1999/03/15 · arxiv updated 2009/12/01

Abstract

We have gained enough statistical precision to distinguish signal from noise in matrix elements of all operators relevant for the Delta I=1/2 rule in kaon decays and for the direct CP violation parameter epsilon-prime. We confirm significant enhancement of Delta I=1/2 transitions observed in experiments, although a few large systematic uncertainties remain in our predictions: higher-order chiral corrections and lattice spacing dependence. The estimate of epsilon-prime parameter is further complicated by the problem of matching lattice and continuum operators.

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