Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-04-19
Phys.Rev. C66 (2002) 065203
Physics
High Energy Physics
High Energy Physics - Phenomenology
To appear in Phys. Rev. C. Two new figures and accompanying text have been added and several discussions have been clarified w
Scientific paper
10.1103/PhysRevC.66.065203
Relativistic prescriptions relating Sachs form factors to nucleon charge and magnetization densities are used to fit recent data for both the proton and the neutron. The analysis uses expansions in complete radial bases to minimize model dependence and to estimate the uncertainties in radial densities due to limitation of the range of momentum transfer. We find that the charge distribution for the proton is significantly broad than its magnetization density and that the magnetization density is slightly broader for the neutron than the proton. The neutron charge form factor is consistent with the Galster parametrization over the available range of Q^2, but relativistic inversion produces a softer radial density. Discrete ambiguities in the inversion method are analyzed in detail. The method of Mitra and Kumari ensures compatibility with pQCD and is most useful for extrapolating form factors to large Q^2.
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