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

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)389-391
Number of pages3
JournalNuclear Physics B - Proceedings Supplements
Volume119
DOIs
Publication statusPublished - 2003 May
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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