The Strangeness Radius and Magnetic Moment of the Nucleon Revisited

Abstract

We update Jaffe's estimate of the strange isoscalar radius and magnetic moment of the nucleon. We make use of a recent dispersion--theoretical fit to the nucleon electromagnetic form factors and an improved description of symmetry breaking in the vector nonet. We find ${\mu }_s=-0.24\pm 0.03$~n.m. and $r_s^2=0.21\pm 0.03$~fm${}^2$. The strange formfactor $F_2^s(t)$ follows a dipole with a cut--off mass of 1.46~GeV, $F_2^s(t)={\mu }_s(1-t/2.14{\mathrm{GeV}}^2{)}^{-2}$. These numbers should be considered as upper limits on the strange vector current matrix--elements in the nucleon.

8 pp, LaTeX, uses epsf, 1 figure in separate file

References in corpus (1)

• Effects of Symmetry Breaking on the Strong and Electroweak Interactions of the Vector Nonet

Cited by in corpus (56)

• Baryons as non-topological chiral solitons
• Nucleon electromagnetic form factors
• Measurement of Strange Quark Contributions to the Nucleon's Form Factors at Q^2=0.230 (GeV/c)^2
• The Strange Quark Contribution to the Proton's Magnetic Moment
• Precision Measurements of the Nucleon Strange Form Factors at Q^2 ~0.1 GeV^2
• Parity-violating electroweak asymmetry in $\vec{e}p$ scattering
• Constraints on the Nucleon Strange Form Factors at Q^2 ~ 0.1 GeV^2
• Measurement of the Neutral Weak Form Factors of the Proton
• The SAMPLE Experiment and Weak Nucleon Structure
• New Measurement of Parity Violation in Elastic Electron-Proton Scattering and Implications for Strange Form Factors
• Lattice Calculation of the Strangeness Magnetic Moment of the Nucleon
• Strangeness in the nucleon: neutrino-nucleon and polarized electron-nucleon scattering
• Parity-Violating Electron Scattering and Neucleon Structure
• Dispersion-theoretical analysis of the nucleon electromagnetic form factors: Inclusion of time-like data
• Strange vector currents and the OZI-rule
• Nucleon electroweak form factors: Analysis of their spectral functions
• Strange nucleon form factors in the perturbative chiral quark model
• Nucleon Structure and Parity-Violating Electron Scattering
• Strange magnetism in the nucleon
• Strange magnetic form factor of the proton at $Q^2=0.23$ GeV${}^2$
• Dispersion-theoretical analysis of the electromagnetic form factors of the nucleon: Past, present and future
• Strange chiral nucleon form factors
• Hadron structure at low Q^2
• K\bar{K}-Continuum and Isoscalar Nucleon Form Factors
• Chiral Symmetry and the Nucleon's Vector Strangeness Form Factors
• Spectral Content of Isoscalar Nucleon Form Factors
• Static properties of chiral models with SU(3) group structure
• Strangeness Form Factors of the Proton in the Chiral Quark Model
• Dispersion Analysis of the Strange Vector Form Factors of the Nucleon
• Flavor structure of the octet magnetic moments
• Nucleon Strangeness and Unitarity
• K^* Mesons and Nucleon Strangeness
• Strange magnetic form factor of nucleon in heavy baryon chiral effective approach at next to leading order
• The phi NN coupling from chiral loops
• KN Scattering and the Nucleon Strangeness Radius
• Determination of the strange nucleon form factors
• What Do We Know About the Strange Magnetic Radius?
• Form factors and other measures of strangeness in the nucleon
• Strange form factors of the nucleon in a two-component model
• Strange nucleon form factors: Solitonic approach to $G_M^s$, $G_E^s$, ${\tilde{G}}_A^p$ and ${\tilde{G}}_A^n$ and comparison with world data
• K* nucleon hyperon form factors and nucleon strangeness
• Strange vector form factors of the nucleon in the SU(3) chiral quark-soliton model with the proper kaonic cloud
• Nucleon Vector Strangeness Form Factors: Multi-pion Continuum and the OZI Rule
• Determination of Nucleon Form factors from Baryonic B Decays
• Baryon form factors: Model-independent results
• Nucleon form factors: From the space-like to the time-like region
• Neutral weak currents in pion electroproduction on the nucleon
• Flavor content of nucleon form factors in a VMD approach
• Strangeness in the nucleon and the ratio of proton-to-neutron neutrino-induced quasi-elastic yield
• Deuteron Electroweak Disintegration
• Strange magnetic moment of the nucleon and SU(3) breaking: group theoretical approach
• Electromagnetic radiative corrections in parity-violating electron-proton scattering
• Strange Vector Form Factor of Kaons
• Strange Mesonic Transition Form Factor in the Chiral Constituent Quark Model
• Parity violating target asymmetry in electron - proton scattering
• Sea quark contributions to the electromagnetic form factors of $\Sigma$ hyperons