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- W1609577215 abstract "domain-wall fermions (DWF) ensembles. The lattice cut off is estimated at a 1 = 1:7 GeV. The lattice volume is as large as 2.7 fm across. The dynamical strange mass is set at slightly heavier than physical, and degenerate up and down mass is varied correpsonding to pion mass of about 0.67, 0.56, 0.42 and 0.33 GeV. We carefully optimize the nucleon source/sink separation in time to about 1.4 fm. Unexpectedly large finite-size effect in the axial charge is found. The effect scales with a single variable, the product mp L of the pion mass mp and lattice spatial linear extent L, and sets in at around mp L = 5. We also discuss momentum-transfer dependence of the vector, induced tensor, axial-vector and induced pesudo-scalar form factors. In particular we extract Dirac and Pauli mean-squared charge radii, magnetic moment, pNN coupling constant and pseudoscalar coupling gP of muon capture by nucleon. While the mean-squared charge radii are distant from the respective experiments, the other observables are in reasonable agreement with the experiments. From structure functions, fully non-perturbatively renormalized iso-vector quark momentum fraction,hxiu d, helicity fraction,hxiDu Dd, and transversity,h1id u d d, are reported, as well as an unrenormalized twist-3 coefficient, d1. The ratio of the momentum to helicity fractions,hxiu d=hxiDu Dd, does not depend on light quark mass and agree well with the experiment. Their respective absolute values, fully renormalized, shows interesting trending toward the respective experimental values at the lightest light quark mass." @default.
- W1609577215 created "2016-06-24" @default.
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- W1609577215 date "2008-09-30" @default.
- W1609577215 modified "2023-09-27" @default.
- W1609577215 title "Nucleon structure with dynamical (2+1)-flavor domain wall fermions lattice QCD" @default.
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