We present a lattice measurement of the first two moments of the spin-dependent GPD H∼~(x, ξ, t) . From these we obtain the axial coupling constant and the second moment of the spin-dependent forward parton distribution. The measurements are done in full QCD using Wilson fermions. In addition, we also present results from a first exploratory study of full QCD using Asqtad sea and domain-wall valence fermions.
Nuclear Physics B Proceedings Supplements
- Pub Date:
- March 2004
- High Energy Physics - Lattice
- Lattice2003(Theory), 3 pages, 3 figures, to appear in the Proceedings of Lattice 2003