Systematic errors in extracting nucleon properties from lattice QCD

Details Systematic errors in extracting nucleon properties from lattice QCD Systematic errors in extracting nucleon properties from lattice QCD

2010-11-05

arxiv.org/abs/1011.1358v1

PoS Lattice2010:147,2010

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 8 figures

Scientific paper

Form factors of the nucleon have been extracted from experiment with high precision. However, lattice calculations have failed so far to reproduce the observed dependence of form factors on the momentum transfer. We have embarked on a program to thoroughly investigate systematic effects in lattice calculation of the required three-point correlation functions. Here we focus on the possible contamination from higher excited states and present a method which is designed to suppress them. Its effectiveness is tested for several baryonic matrix elements, different lattice sizes and pion masses.

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