Nucleon axial charge from quenched lattice QCD with domain wall fermions and DBW2 gauge action

Shigemi Ohta, Y. Aoki, T. Blum, N. Christ, M. Creutz, C. Dawson, T. Izubuchi, L. Levkova, X. Liao, G. Liu, R. Mawhinney, Y. Nemoto, J. Noaki, K. Orginos, S. Prelovack, S. Sasaki, A. Soni

研究成果: Article査読

1 被引用数 (Scopus)

抄録

The domain wall fermion (DWF) method, with its almost perfectly preserved chiral symmetry on the lattice, makes the calculation of the nucleon axial charge particularly easy. By maintaining chiral symmetry and using the Ward-Takahashi (WT) identity, one has ZA = ZV and the bare lattice calculation yields the physical value without explicit renormalization. The DBW2 improved gauge action provides further enhancement of the symmetry and hence a more accurate WT identity at coarse lattice spacing. Taking advantage of these methods, we confirmed a significant volume dependence of the nucleon axial charge on (1.2fm)3 and (2.4fm)3 lattice volumes.

本文言語English
ページ(範囲)389-391
ページ数3
ジャーナルNuclear Physics B - Proceedings Supplements
119
DOI
出版ステータスPublished - 2003 5月
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 核物理学および高エネルギー物理学

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