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arxiv: 1203.6579 · v1 · submitted 2012-03-29 · ✦ hep-lat

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First moments of the nucleon generalized parton distributions from lattice QCD

A. Sternbeck , M. G\"ockeler , Ph. H\"agler , R. Horsley , Y. Nakamura , A. Nobile , D. Pleiter , P.E.L. Rakow
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A. Sch\"afer G. Schierholz J. Zanotti
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classification ✦ hep-lat
keywords generalizeddistributionsfirstlatticemomentsnucleonpartonresults
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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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