Determination of the strange nucleon form factors

Abstract

The strange contribution to the electric and magnetic form factors of the nucleon is determined at a range of discrete values of $Q^2$ up to $1.4$ GeV${}^2$. This is done by combining recent lattice QCD results for the electromagnetic form factors of the octet baryons with experimental determinations of those quantities. The most precise result is a small negative value for the strange magnetic moment: $G_M^s(Q^2=0)=-0.07\pm 0.03{\mu }_N$. At larger values of $Q^2$ both the electric and magnetic form factors are consistent with zero to within $2$-sigma.

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• QCD description of backward vector meson hard electroproduction
• On the $\eta$ and ${\eta }^{\prime }$ Photoproduction Beam Asymmetry at High Energies
• Chiral Effective Theory Methods and their Application to the Structure of Hadrons from Lattice QCD
• How strange is pion electroproduction?
• Pure sea-quark contributions to the magnetic form factors of $\Sigma$ baryons
• Charge Symmetry Violation in the Electromagnetic Form Factors of the Proton
• Hadron Structure and Spectrum from the Lattice
• Charge symmetry violation in the determination of strangeness form factors