We have reported elsewhere in this conference on our continuing project to determine non-perturbative Wilson coefficients on the lattice, as a step towards a completely non-perturbative determination of the nucleon structure. In this talk we discuss how these Wilson coefficients can be used to extract Nachtmann moments of structure functions, using the case of off-shell Landau-gauge quarks as a first simple example. This work is done using overlap fermions, because their improved chiral properties reduce the difficulties due to operator mixing.
@article{arxiv.0911.4892,
title = {Quark structure from the lattice Operator Product Expansion},
author = {W. Bietenholz and N. Cundy and M. Göckeler and R. Horsley and H. Perlt and D. Pleiter and P. E. L. Rakow and G. Schierholz and A. Schiller and T. Streuer and J. M. Zanotti},
journal= {arXiv preprint arXiv:0911.4892},
year = {2019}
}
Comments
7 pages, 3 figures. Talk given at the XXVII International Symposium on Lattice Field Theory, July 26-31 2009, Peking University, Beijing, China