Flavor content of nucleon form factors in a VMD approach

Abstract

The strange form factors of the nucleon are studied in a two-component model consisting of a three-quark intrinsic structure surrounded by a meson cloud. A comparison with the available experimental world data from the SAMPLE, PVA4, HAPPEX and G0 collaborations shows a good overall agreement. It is shown that the strangeness contribution to the electric and magnetic form factors is of the order of a few percent. In particular, the strange quark contribution to the charge radius is small (0.005 fm**2) and to the magnetic moment it is positive (0.315 n.m.).

5 pages, 6 figures, 1 table, invited talk at PAVI06, Milos, Greece, May 16-20, 2006

References in corpus (2)

• The SAMPLE Experiment and Weak Nucleon Structure
• Determination of the strange form factors of the nucleon from $\nu p$, $\bar{\nu }p$, and parity-violating $\vec{e}p$ elastic scattering

Cited by in corpus (6)

• Electromagnetic form factors of $\Lambda$ hyperon in the vector meson dominance model and a possible explanation of the near-threshold enhancement of the $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ reaction
• 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
• Electromagnetic form factors of neutron and neutral stange hyperons in the oscillating view of point
• Nucleon form factors and parton distributions in nonlocal chiral effective theory
• Contributions to the nucleon form factors from bubble and tadpole diagrams
• Flavor content of nucleon form factors in the space- and time-like region