Structure functions and form factors close to the chiral limit from lattice QCD

Details Structure functions and form factors close to the chiral limit from lattice QCD Structure functions and form factors close to the chiral limit from lattice QCD

2003-11-11

arxiv.org/abs/hep-lat/0311017v2

Nucl.Phys.Proc.Suppl.128:82-88,2004

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 7 figures; contribution to the 2003 Workshop on Lattice Hadron Physics, Cairns, Australia; error in Fig. 4 corrected;

Scientific paper

10.1016/S0920-5632(03)02462-9

Results for nucleon matrix elements (arising from moments of structure functions) and form factors from a mixture of runs using Wilson, clover and overlap fermions (both quenched and unquenched) are presented and compared in an effort to explore the size of the chiral `regime', lattice spacing errors and quenching artefacts. While no run covers this whole range of effects the partial results indicate a picture of small lattice spacing errors, small quenching effects and only reaching the chiral regime at rather light quark masses.

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