On unifying the description of meson and baryon properties

Details On unifying the description of meson and baryon properties On unifying the description of meson and baryon properties

2008-10-07

arxiv.org/abs/0810.1222v1

Phys.Rev.C79:012202,2009

Physics

Nuclear Physics

Nuclear Theory

5 pages, 4 figures, 1 table

Scientific paper

10.1103/PhysRevC.79.012202

A Poincare' covariant Faddeev equation is presented, which enables the simultaneous prediction of meson and baryon observables using the leading-order in a truncation of the Dyson-Schwinger equations that can systematically be improved. The solution describes a nucleon's dressed-quark core. The evolution of the nucleon mass with current-quark mass is discussed. A nucleon-photon current, which can produce nucleon form factors with realistic Q^2-evolution, is described. Axial-vector diquark correlations lead to a neutron Dirac form factor that is negative, with r_1^{nu}>r_1^{nd}. The proton electric-magnetic form factor ratio falls with increasing Q^2.

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