A. Sternbeck, M. Göckeler, Ph. Hägler, R. Horsley, Y. Nakamura, A. Nobile, D. Pleiter, P. E. L. Rakow, A. Schäfer, G. Schierholz, J. Zanotti
We report on our lattice calculations of the nucleon's generalized parton distributions (GPDs), concentrating on their first moments for the case of N_f=2. Due to recent progress on the numerical side we are able to present results for the generalized form factors at pion masses as low as 260 MeV. We perform a fit to one-loop covariant baryon chiral perturbation theory with encouraging results.
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http://arxiv.org/abs/1203.6579
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