We report on our calculation of the nucleon axial and tensor charges in 2+1-flavor QCD with dynamical overlap quarks. Gauge ensembles are generated at a single lattice spacing 0.12 fm and at a strange quark mass close to its physical value. We employ the all-mode-averaging technique to calculate the relevant nucleon correlation functions, and the disconnected quark loop is efficiently calculated by using the all-to-all quark propagator. We present our preliminary results for the isoscalar and isovector charges obtained at pion masses mπ = 450 and 540 MeV.
@article{arxiv.1511.04589,
title = {Nucleon axial and tensor charges with dynamical overlap quarks},
author = {N. Yamanaka and H. Ohki and S. Hashimoto and T. Kaneko},
journal= {arXiv preprint arXiv:1511.04589},
year = {2015}
}
Comments
7 pages, 10 figures, proceeding of the 33rd International Symposium on Lattice field theory (Lattice 2015), Kobe, Japan, July 2015