Lattice calculation of matrix elements relevant for Delta I=1/2 rule and epsilon-prime
High Energy Physics - Lattice
2007-05-23 v1
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.
Cite
@article{arxiv.hep-lat/9903025,
title = {Lattice calculation of matrix elements relevant for Delta I=1/2 rule and epsilon-prime},
author = {D. Pekurovsky and G. Kilcup},
journal= {arXiv preprint arXiv:hep-lat/9903025},
year = {2007}
}
Comments
RevTeX, 5 pages, 5 figures, uses epsf, proceedings from DPF'99 conference