Extrapolations of Lattice Meson Form Factors
High Energy Physics - Lattice
2014-11-17 v3 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We use chiral perturbation theory to study the extrapolations necessary to make physical predictions from lattice QCD data for the electromagnetic form factors of pseudoscalar mesons. We focus on the quark mass, momentum, lattice spacing, and volume dependence and apply our results to simulations employing mixed actions of Ginsparg-Wilson valence quarks and staggered sea quarks. To determine charge radii at quark masses on the lattices currently used, we find that all extrapolations except the one to infinite volume make significant contributions to the systematic error.
Keywords
Cite
@article{arxiv.hep-lat/0607001,
title = {Extrapolations of Lattice Meson Form Factors},
author = {T. B. Bunton and F. -J. Jiang and B. C. Tiburzi},
journal= {arXiv preprint arXiv:hep-lat/0607001},
year = {2014}
}
Comments
14pp, discussion and Ref. added for disconnected diagrams