Moments of nucleon spin-dependent generalized parton distributions
Abstract
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.
- Publication:
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Nuclear Physics B Proceedings Supplements
- Pub Date:
- March 2004
- DOI:
- 10.1016/S0920-5632(03)02750-6
- arXiv:
- arXiv:hep-lat/0309065
- Bibcode:
- 2004NuPhS.129..907S
- Keywords:
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- High Energy Physics - Lattice
- E-Print:
- Lattice2003(Theory), 3 pages, 3 figures, to appear in the Proceedings of Lattice 2003