Nucleon structure from 2+1 flavor lattice QCD near the physical point

Natsuki Tsukamoto, Ken Ichi Ishikawa, Yoshinobu Kuramashi, Shoichi Sasaki, Takeshi Yamazaki

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

We present an update on our results of nucleon form factors measured on a large-volume lattice (8:1fm)4 at almost the physical point in 2+1 flavor QCD. The configurations are generated with the stout-smeared O(a) improved Wilson quark action and Iwasaki gauge action at β = 1:82, which corresponds to the lattice spacing of 0.085 fm. The pion mass at the simulation point is about 145 MeV. We determine the isovector electric radius and magnetic moment from nucleon electric (GE) and magnetic (GM) form factors. We also report on preliminary results of the axial-vector (FA), induced pseudo-scalar (FP) and pseudo-scalar (GP) 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.

Original languageEnglish
Article number06007
JournalEPJ Web of Conferences
Volume175
DOIs
Publication statusPublished - 2018 Mar 26
Event35th International Symposium on Lattice Field Theory, Lattice 2017 - Granada, Spain
Duration: 2017 Jun 182017 Jun 24

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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