Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-06-23
Chin.Phys.C33:1189-1196,2009
Physics
Nuclear Physics
Nuclear Theory
8 pages, 7 figures. Contribution to the Proceedings of the Workshop on the Physics of the Excited Nucleon (NSTAR2009), Institu
Scientific paper
10.1088/1674-1137/33/12/022
Two basic motivations for an upgraded JLab facility are the needs: to determine the essential nature of light-quark confinement and dynamical chiral symmetry breaking (DCSB); and to understand nucleon structure and spectroscopy in terms of QCD's elementary degrees of freedom. During the next ten years a programme of experiment and theory will be conducted that can address these questions. We present a Dyson-Schwinger equation perspective on this effort with numerous illustrations, amongst them: an interpretation of string-breaking; a symmetry-preserving truncation for mesons; the nucleon's strangeness sigma-term; and the neutron's charge distribution.
Chang Lei
Cloët Ian C.
El-Bennich Bruno
Klahn Thomas
Roberts Craig D.
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