arXiv:hep-lat/0309065·v1·High Energy Physics — Lattice
Moments of nucleon spin-dependent generalized parton distributions
W. Schroers (1)🇺🇸 · R.C. Brower (2) · P. Dreher (1) · R. Edwards (3) · G. Fleming (3) · Ph. Hagler (1) · U.M. Heller (4) · Th. Lippert (5) · J.W. Negele (1) · A.V. Pochinsky (1) · D.B. Renner (1) · D. Richards (3) · K. Schilling (5) ((1) MIT, (2) Boston U., (3) JLab, (4) APS, (5) Wuppertal U.)
Abstract
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.
Comments: Lattice2003(Theory), 3 pages, 3 figures, to appear in the Proceedings of Lattice 2003