Quark structure from the lattice Operator Product Expansion

Details Quark structure from the lattice Operator Product Expansion Quark structure from the lattice Operator Product Expansion

2009-11-25

arxiv.org/abs/0911.4892v1

PoS LAT2009:139,2009

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 3 figures. Talk given at the XXVII International Symposium on Lattice Field Theory, July 26-31 2009, Peking Universit

Scientific paper

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.

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