Few-Body Systems

, Volume 52, Issue 3, pp 345-355

First online:

Looking into the Matter of Light-Quark Hadrons

  • Craig D. RobertsAffiliated withPhysics Division, Argonne National LaboratoryDepartment of Physics, Center for High Energy Physics and State Key Laboratory of Nuclear Physics and Technology, Peking UniversityDepartment of Physics, Illinois Institute of Technology Email author 

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In tackling QCD, a constructive feedback between theory and extant and forthcoming experiments is necessary in order to place constraints on the infrared behaviour of QCD’s β-function, a key nonperturbative quantity in hadron physics. The Dyson–Schwinger equations provide a tool with which to work toward this goal. They connect confinement with dynamical chiral symmetry breaking, both with the observable properties of hadrons, and hence can plausibly provide a means of elucidating the material content of real-world QCD. This contribution illustrates these points via comments on: in-hadron condensates; dressed-quark anomalous chromo- and electro-magnetic moments; the spectra of mesons and baryons, and the critical role played by hadron-hadron interactions in producing these spectra.