Nucleon isovector couplings from 2+1 flavor lattice QCD at the physical point

20 Jun 2019, 15:20
20m
Wuchang

Wuchang

Parallel Hadron structure Hadron structure

Speaker

NATSUKI TSUKAMOTO (Tohoku University)

Description

We report the recent progress on our study of the nucleon couplings including the axial, tensor and scalar couplings on a $(10.8\rm fm)^4$ lattice using the PACS10 gauge configuration generated by the PACS Collaboration with the stout-smeared $\mathcal{O}(a)$ improved Wilson fermions and Iwasaki gauge action at $\beta = 1.82$ corresponding to the lattice spacing of 0.084fm. We also estimated the renormalization constant in the RI/SMOM scheme which stands for Regurization Independent Symmetric MOMentum-subtraction scheme. Using the matching and evolution factors obtained from the perturbation theory, we then evaluated the renormalized nucleon couplings in the $\overline{\rm MS}$ scheme at the renormalizaion scale of 2 GeV.

Authors

NATSUKI TSUKAMOTO (Tohoku University) Yasumichi Aoki (RIKEN) Ken-Ichi Ishikawa (Hiroshima University) Yoshinobu Kuramashi (University of Tsukuba) Shoichi Sasaki (Tohoku University) Eigo Shintani (RIKEN) Takeshi Yamazaki (University of Tsukuba)

Presentation materials