We present preliminary results for nucleon form factors including the axial charge and the isovector electric radius in 2+1 flavor QCD at almost the physical pion mass on a 964 lattice with the lattice spacing of 0.085 fm. The configurations are generated with the stout-smeared O(a)- improved Wilson quark action and the Iwasaki gauge action at β=1.82. A large spatial volume of (8.1fm)3 allows us to investigate the form factors at small momentum transfer region. We discuss analyses of the momentum dependence of the form factors with the z-expansion.
|Proceedings of Science
|Published - 2016
|34th Annual International Symposium on Lattice Field Theory, LATTICE 2016 - Southampton, United Kingdom
Duration: 2016 Jul 24 → 2016 Jul 30