Finite Volume Errors in B_K
Lattice Gauge Theory Research Center, CTP, and FPRD, Department of Physics and Astronomy, Seoul National University, Seoul, 151-747, South Korea
arXiv:1111.0128v1 [hep-lat] (1 Nov 2011)
@article{2011arXiv1111.0128K,
author={Kim}, J. and {Kim}, H.-J. and {Lee}, W. and {Jung}, C. and {Sharpe}, S.~R.},
title={"{Finite Volume Errors in $B_K$}"},
journal={ArXiv e-prints},
archivePrefix={"arXiv"},
eprint={1111.0128},
primaryClass={"hep-lat"},
keywords={High Energy Physics – Lattice},
year={2011},
month={nov},
adsurl={http://adsabs.harvard.edu/abs/2011arXiv1111.0128K},
adsnote={Provided by the SAO/NASA Astrophysics Data System}
}
We discuss finite volume errors in our calculations of $B_K$ using improved staggered fermions on the MILC asqtad lattices. Using GPUs, we are now able to extrapolate using next-to-leading order (NLO) staggered SU(2) chiral perturbation theory including the finite volume corrections arising from pion loops. We find that the impact of FV fitting is very small, giving a 0.5% shift in the continuum limit.
November 2, 2011 by hgpu
