We present results on the axial, scalar and tensor isovector-couplings of the nucleon from 2+1 flavor lattice QCD with physical light quarks (mπ = 135 MeV) in large spatial volume of (10.8 fm)3. The calculations are carried out with the PACS10 gauge configurations generated by the PACS Collaboration with the stout-smeared O(a) improved Wilson fermions and Iwasaki gauge action at β = 1.82 corresponding to the lattice spacing of 0.084 fm. For the renormalization, we use the RI/SMOM scheme, a variant of Rome-Southampton RI/MOM scheme with reduced systematic errors, as the intermediate scheme. We then evaluate our final results in the MS scheme at a scale of 2 GeV, using the continuum perturbation theory for the matching scale of RI/SMOM and MS schemes and running.
|Journal||Proceedings of Science|
|Publication status||Published - 2019|
|Event||37th International Symposium on Lattice Field Theory, LATTICE 2019 - Wuhan, China|
Duration: 2019 Jun 16 → 2019 Jun 22
ASJC Scopus subject areas