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Spectral Content of Isoscalar Nucleon Form Factors

Authors
  • Hammer, H W
  • Ramsey-Musolf, M J
Publication Date
Dec 08, 1998
Identifiers
DOI: 10.1103/PhysRevC.60.045205
OAI: oai:arXiv.org:hep-ph/9812261
Source
CERN Document Server
Keywords
Language
English
License
Unknown
External links

Abstract

The nucleon strange vector and isoscalar electromagnetic form factors are studied using a spectral decomposition. The K\bar{K} contribution to the electric and magnetic radii as well as the magnetic moment is evaluated to all orders in the strong interaction using an analytic continuation of experimental KN scattering amplitudes and bounds from unitarity. A detailed account of the prodecure and problems related to the analytic continuation is given. The relationship between non-resonant and resonant K\bar{K} contributions to the form factors is demonstrated, and values for the vector and tensor \phi evaluate the credibility of model calculations for the strange quark vector current form factors.

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