English

On unifying the description of meson and baryon properties

Nuclear Theory 2010-04-15 v1 High Energy Physics - Lattice High Energy Physics - Phenomenology Nuclear Experiment

Abstract

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.

Keywords

Cite

@article{arxiv.0810.1222,
  title  = {On unifying the description of meson and baryon properties},
  author = {G. Eichmann and I. C. Cloet and R. Alkofer and A. Krassnigg and C. D. Roberts},
  journal= {arXiv preprint arXiv:0810.1222},
  year   = {2010}
}

Comments

5 pages, 4 figures, 1 table