Moments of nucleon spin-dependent generalized parton distributions

(2) Boston U.; (3) JLab; (4) APS; (5) Wuppertal U.); A.V. Pochinsky (1); D.B. Renner (1); D. Richards (3); G. Fleming (3); J.W. Negele (1); K. Schilling (5) ((1) MIT

arxiv: hep-lat/0309065 · v1 · submitted 2003-09-14 · ✦ hep-lat

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)

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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.)

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classification ✦ hep-lat

keywords spin-dependentfermionsfirstfullmomentspartonadditionasqtad

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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.

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Moments of nucleon spin-dependent generalized parton distributions

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