There are at least two methods to calculate BK with staggered fermions: one is the two spin trace formalism and the other is the one spin trace formalism. We have performed numerical simulations on a 163×40 lattice in full QCD with β=5.7 and a dynamical quark mass 0.01 in lattice units. We try various sources to select only the pseudo-Goldstone bosons and compare the various results.
@article{arxiv.hep-lat/9412075,
title = {K^0--\bar{K}^0 mixing in full lattice QCD},
author = {Weonjong Lee and Markus Klomfass},
journal= {arXiv preprint arXiv:hep-lat/9412075},
year = {2010}
}
Comments
Contribution to Lattice 94, 3 pages, Compressed, uuenocded postscript file of the complete paper