2024-03-29T15:51:27Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00051927
2022-07-18T23:51:31Z
117:3152
3048:798
3:62:5598:84
Nucleon form factors on a large volume lattice near the physical point in 2+1 flavor QCD
藏増, 嘉伸
クラマシ, ヨシノブ
KURAMASHI, Yoshinobu
山﨑, 剛
ヤマザキ, タケシ
YAMAZAKI, Takeshi
Ishikawa, Ken-Ichi
Sasaki, Shoichi
Tsukamoto, Natsuki
Ukawa, Akira
We present results for the isovector nucleon form factors measured on a 964 lattice at almost the physical pion mass with a lattice spacing of 0.085 fm in 2+1 flavor QCD. The configurations are generated with the stout-smeared O(a)-improved Wilson quark action and the Iwasaki gauge action at β=1.82. The pion mass at the simulation point is about 146 MeV. A large spatial volume of (8.1??fm)3 allows us to investigate the form factors in the small momentum transfer region. We determine the isovector electric radius and magnetic moment from nucleon electric (GE) and magnetic (GM) form factors as well as the axial-vector coupling gA. We also report on the results of the axial-vector (FA), induced pseudoscalar (FP) and pseudoscalar (GP) form factors in order to verify the axial Ward-Takahashi identity in terms of the nucleon matrix elements, which may be called the generalized Goldberger-Treiman relation.
journal article
American Physical Society
2018-10
application/pdf
Physical review D
7
98
074510
2470-0010
AA00773624
https://tsukuba.repo.nii.ac.jp/record/51927/files/PRD_98-7-074510.pdf
eng
https://doi.org/10.1103/PhysRevD.98.074510
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
open access