Hadron structure with light dynamical quarks
LHPC Collaboration, Robert G. Edwards, George Taminga Fleming, Philipp Hagler, John W. Negele, Kostas Orginos, Andrew V. Pochinsky, Dru B. Renner, David G. Richards, Wolfram Schroers
Abstract
Generalized parton distributions encompass a wealth of information concerning the three-dimensional quark and gluon structure of the nucleon, and thus provide an ideal focus for the study of hadron structure using lattice QCD. The special limits corresponding to form factors and parton distributions are well explored experimentally, providing clear tests of lattice calculations, and the lack of experimental data for more general cases provides opportunities for genuine predictions and for guiding experiment. We present results from hybrid calculations with improved staggered (Asqtad) sea quarks and domain wall valence quarks at pion masses down to 350 MeV.
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