Volume 256 - 34th annual International Symposium on Lattice Field Theory (LATTICE2016) - Hadron Structure
Nucleon form factors near the physical point in 2+1 flavor QCD
Y. Kuramashi,* K.I. Ishikawa, S. Sasaki, T. Yamazaki, N. Tsukamoto, A. Ukawa on behalf of PACS Collaboration
*corresponding author
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Pre-published on: February 01, 2017
Published on: March 24, 2017
Abstract
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 $96^4$ 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 $\beta$=1.82. A large spatial volume of $(8.1 {\rm fm})^3$ 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.
DOI: https://doi.org/10.22323/1.256.0158
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