A study of the nucleon axial current coupling in quenched lattice QCD

R. M. Woloshyn, K. F. Liu

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Axial current matrix elements between nucleon states are calculated in quenced lattice QCD. The ratio F/D is seen to be less than 2 3, the quark-model value, for light quarks but an instability in this quantity near κcr precludes a definite prediction. Assuming a smooth extrapolation of the axial current coupling to the physical nucleon mass region yields an estimate for the renormalized coupling constant gA/gV of 1.1 ± 0.1.

Original languageEnglish
Pages (from-to)527-540
Number of pages14
JournalNuclear Physics B
Issue number3
StatePublished - Jan 2 1989

Bibliographical note

Funding Information:
We thank T. Draper for helpful discussions. This work was supported in part by the Natural Sciences and Engineering Research Council of Canada and in part by the US Department of Energy under grant no. DE-FG05-84ER40154. It was also supported by the Florida State University Supercomputer Computations Research Institute which is partially funded by the US Department of Energy through contract no. DE-FC05-85ER250000.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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