arXiv:1203.6579·v1·High Energy Physics — Lattice
First moments of the nucleon generalized parton distributions from lattice QCD
A. Sternbeck🇩🇪 · M. Göckeler🇩🇪 · Ph. Hägler🇩🇪 · R. Horsley🇬🇧 · Y. Nakamura🇯🇵 · A. Nobile🇩🇪 · D. Pleiter🇩🇪 · P.E.L. Rakow🇬🇧 · A. Schäfer🇩🇪 · G. Schierholz🇩🇪 · J. Zanotti🇦🇺
Abstract
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.
Comments: 7 pages, 4 figures. Contribution to the XXIX International Symposium on Lattice Field Theory, July 10-16, 2011, Squaw Valley, Lake Tahoe, California