324 research outputs found
Nucleon structure from 2+1 flavor lattice QCD near the physical point
We present an update on our results of nucleon form factors measured on a
large-volume lattice at almost the physical point in 2+1
flavor QCD. The configurations are generated with the stout-smeared
improved Wilson quark action and Iwasaki gauge action at
, which corresponds to the lattice spacing of 0.085 fm. The pion
mass at the simulation point is about 145 MeV. We determine the iso- vector
electric radius and magnetic moment from nucleon electric () and magnetic
() form factors. We also report on preliminary results of the axial-vector
(), induced pseudo-scalar () and pseudo-scalar () form factors
in order to verify the axial Ward- Takahashi identity in terms of the nucleon
matrix elements, which may be called as the generalized Goldberger-Treiman
relation.Comment: 8 pages, 12 figures; talk presented at the 35th International
Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spai
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