Moments of nucleon spin-dependent generalized parton distributions

Schroers, W.; Brower, R. C.; Dreher, P.; Edwards, R.; Fleming, G.; Hagler, Ph.; Heller, U. M.; Lippert, Th.; Negele, J. W.; Pochinsky, A. V.; Renner, D. B.; Richards, D.; Schilling, K.

Moments of nucleon spin-dependent generalized parton distributions

Authors

Description

We present a lattice measurement of the first two moments of the spin-dependent GPD H-tilde(x,xi,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.
Lattice2003(Theory), 3 pages, 3 figures, to appear in the Proceedings of Lattice 2003