Moments of generalized parton distributions and quark angular momentum of the nucleon

2); (2) DESY; (3) Munich; (4) Edinburgh U.; 5); (5) NIC; (6) Liverpool U.; (7) Konrad Zuse Zent. Informationstech.); A. Schafer (1); D. Brommel (1

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Moments of generalized parton distributions and quark angular momentum of the nucleon

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arxiv 0710.1534 v1 pith:BYPMG3L4 submitted 2007-10-08 hep-lat

QCDSF/UKQCD Collaboration: M. Ohtani (1) , D. Brommel (1 , 2) , M. Gockeler (1) , Ph. Hagler (3) , R. Horsley (4) , Y. Nakamura (5) , D. Pleiter (5)

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P.E.L. Rakow (6) A. Schafer (1) G. Schierholz (2 5) W. Schroers (5) H. Stuben (7) J.M. Zanotti (4) ((1) Regensburg U. (2) DESY (3) Munich Tech. U. (4) Edinburgh U. (5) NIC Zeuthen (6) Liverpool U. (7) Konrad Zuse Zent. Informationstech.)

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keywords angularchiraldistributionsgeneralizedgpdshadronimportantmomentum

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The internal structure of hadrons is important for a variety of topics, including the hadron form factors, proton spin and spin asymmetry in polarized proton scattering. For a systematic study generalized parton distributions (GPDs) encode important information on hadron structure in the entire impact parameter space. We report on a computation of nucleon GPDs based on simulations with two dynamical non-perturbatively improved Wilson quarks with pion masses down to 350MeV. We present results for the total angular momentum of quarks with chiral extrapolation based on covariant baryon chiral perturbation theory.

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