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Nucleon form factors in dispersion theory

  • H. -W. Hammer
Conference paper

Abstract

Dispersion relations provide a powerful tool to analyse the electromagnetic form factors of the nucleon in both the space-like and the time-like regions with constraints from other experiments, unitarity, and perturbative QCD. We give a brief introduction into dispersion theory for nucleon form factors and present first results from our ongoing form factor analysis. We also calculate the two-pion continuum contribution to the isovector spectral functions drawing upon the new high statistics measurements of the pion form factor by the CMD-2, KLOE, and SND collaborations.

Keywords

Form Factor Spectral Function Vector Meson Electromagnetic Form Factor Pion Form Factor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Società Italiana di Fisica / Springer-Verlag 2006

Authors and Affiliations

  • H. -W. Hammer
    • 1
  1. 1.Helmholtz-Institut für Strahlen- und Kernhysik (Theorie)Universität BonnBonnGermany

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