Spectral Content of Isoscalar Nucleon Form Factors

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. The relationship between non-resonant and resonant K\bar{K} contributions to the form factors is demonstrated, and values for the vector and tensor ϕN\bar{N} couplings are derived. The K\bar{K} spectral functions are used to evaluate the credibility of model calculations for the strange quark vector current form factors.

28 pages, Latex, 7 PS figures included with epsf.sty, technical details on analytic continuation left out, version to appear in Phys. Rev. C

References in corpus (8)

• Measurement of the Proton's Neutral Weak Magnetic Form Factor
• Measurement of the Neutral Weak Form Factors of the Proton
• Lattice Calculation of the Strangeness Magnetic Moment of the Nucleon
• Strange magnetism in the nucleon
• K\bar{K}-Continuum and Isoscalar Nucleon Form Factors
• K^* Mesons and Nucleon Strangeness
• KN Scattering and the Nucleon Strangeness Radius
• Nucleon Vector Strangeness Form Factors: Multi-pion Continuum and the OZI Rule

Cited by in corpus (22)

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• The Strange Quark Contribution to the Proton's Magnetic Moment
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• The Nucleon Anapole Moment and Parity-Violating ep Scattering
• New Measurement of Parity Violation in Elastic Electron-Proton Scattering and Implications for Strange Form Factors
• $\varphi$ and $\omega$ Meson Production in pp Reactions at $p_{lab}$=3.67 GeV/c
• New insights into the nucleon's electromagnetic structure
• Updated dispersion-theoretical analysis of the nucleon electromagnetic form factors
• Nucleon strangeness form factors from N_f=2+1 clover fermion lattice QCD
• Dispersion-theoretical analysis of the electromagnetic form factors of the nucleon: Past, present and future
• K\bar{K}-Continuum and Isoscalar Nucleon Form Factors
• Novel evaluation of the two-pion contribution to the nucleon isovector form factors
• Peripheral transverse densities of the baryon octet from chiral effective field theory and dispersion analysis
• The phi NN coupling from chiral loops
• What Do We Know About the Strange Magnetic Radius?
• Realizing vector meson dominance with transverse charge densities
• K* nucleon hyperon form factors and nucleon strangeness
• Nucleon Form Factors in Dispersion Theory
• Chiral constraints on the isoscalar electromagnetic spectral functions of the nucleon from leading order vector meson couplings
• Strange Vector Form Factor of Kaons
• Baryon Form Factors