Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2008-10-10
PoS LATTICE2008:141,2008
Physics
High Energy Physics
High Energy Physics - Lattice
13 pages, 17 figures. Talks presented at the XXVI International Symposium on Lattice Field Theory, July 14 - 19 2008, Williams
Scientific paper
In order to advance lattice calculations of moments of unpolarized, helicity, and transversity distributions, electromagnetic form factors, and generalized form factors of the nucleon to a new level of precision, this work investigates several key aspects of precision lattice calculations. We calculate the number of configurations required for constant statistical errors as a function of pion mass, describe the coherent sink method to help achieve these statistics, examine the statistical correlations between separate measurements, study correlations in the behavior of form factors at different momentum transfer, examine volume dependence, and compare mixed action results with those using comparable dynamical domain wall configurations. We also show selected form factor results and comment on the QCD evolution of our calculations of the flavor non-singlet nucleon angular momentum.
Bratt Jonathan D.
Edwards Robert G.
Engelhardt Michael
Fleming George T.
Hägler Ph.
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