One loop matching factors for improved staggered four-fermion operators with improved glue
Abstract
We present results for matching factors for staggered four-fermion operators constructed using HYP-smeared fat links both in the action and the operators. We use perturbation theory to calculate the matching factors and work to one-loop order. The new feaure of this work is the use of the Symanzik-improved gauge action, as opposed to the Wilson gauge action. Our results are needed for our ongoing calculation of weak matrix elements using HYP-smeared staggered valence quarks and operators on MILC lattices. We give explicit results for matching factors of the operator needed to calculate . We compare the impact of the improvement of the gauge action on one-loop coefficients with that of mean-field improvement of the operators.
Cite
@article{arxiv.1010.5483,
title = {One loop matching factors for improved staggered four-fermion operators with improved glue},
author = {Jongjeong Kim and Weonjong Lee and Stephen R. Sharpe},
journal= {arXiv preprint arXiv:1010.5483},
year = {2011}
}
Comments
7 pages, Lattice 2010 proceeding