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Type: Conference paper
Title: Nucleon structure in terms of OPE with non-perturbative Wilson coeffcients
Author: Bietenholz, W.
Cundy, N.
Gockeler, M.
Horsley, R.
Perlt, H.
Pleiter, D.
Rakow, P.
Schierholz, G.
Schiller, A.
Zanotti, J.
Citation: P o S - Proceedings of Science (LATTICE 2008), 2008; 149:1-149:7
Publisher: Scuola Internazionale Superiore di Studi Avanzati (S I S S A)
Publisher Place: Italy
Issue Date: 2008
ISSN: 1824-8039
Conference Name: International Symposium on Lattice Field Theory (26th : 2008 : Williamsburg, Virginia, U.S.A.)
Statement of
W. Bietenholz, N. Cundy, M. Göckeler, R. Horsley, H. Perlt, D. Pleiter, P.E.L. Rakow, G. Schierholz, A. Schiller and J.M. Zanotti
Abstract: Lattice calculations could boost our understanding of Deep Inelastic Scattering by evaluating moments of the Nucleon Structure Functions. To this end we study the product of electromagnetic currents between quark states. The Operator Product Expansion (OPE) decomposes it into matrix elements of local operators (depending on the quark momenta) and Wilson coefficients (as functions of the larger photon momenta). For consistency with the matrix elements, we evaluate a set of Wilson coefficients non-perturbatively, based on propagators for numerous momentum sources, on a 243 ×48 lattice. The use of overlap quarks suppresses unwanted operator mixing and lattice artifacts. Results for the leadingWilson coefficients are extracted by means of Singular Value Decomposition.)
Description: Listed in published papers as: Hadron structure in terms of OPE with non-perturbative Wilson coefficients; PoS(LATTICE 2008)149
Rights: Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
RMID: 0020120351
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Appears in Collections:Chemistry and Physics publications

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