We perform a quenched lattice calculation of the first moment of twist-two generalized parton distribution functions of the proton, and assess the total quark (spin and orbital angular momentum) contribution to the spin of the proton.
@article{arxiv.hep-ph/0304249,
title = {Generalized Parton Distributions from Lattice QCD},
author = {M. Göckeler and R. Horsley and D. Pleiter and P. E. L. Rakow and A. Schäfer and G. Schierholz and W. Schroers},
journal= {arXiv preprint arXiv:hep-ph/0304249},
year = {2008}
}
Comments
11 pages, 4 figures; final version, to be published in Phys. Rev. Lett