On systematic errors due to quenching in epsilon-prime over epsilon
High Energy Physics - Lattice
2009-11-07 v1 High Energy Physics - Phenomenology
Abstract
Recently, we pointed out that chiral transformation properties of penguin operators change in the transition from unquenched to (partially) quenched QCD. As a consequence, new operators appear in (partially) quenched QCD penguins, introducing ambiguities which should be considered a quenching artifact. Here we discuss more specifically the effects of this phenomenon on the quenched Delta I=1/2 K to pi pi amplitude, and in particular, its potential numerical effect on recent lattice estimates for epsilon-prime over epsilon.
Keywords
Cite
@article{arxiv.hep-lat/0208069,
title = {On systematic errors due to quenching in epsilon-prime over epsilon},
author = {Maarten Golterman and Elisabetta Pallante},
journal= {arXiv preprint arXiv:hep-lat/0208069},
year = {2009}
}
Comments
contribution to Lattice2002(matrixel)