MEASUREMENTS OF THE PROTON ELASTIC FORM-FACTORS FOR SS-THAN-OR-EQUAL-TO-Q2-LESS-THAN-OR-EQUAL-TO-3(GEV C)2 AT SLAC/

We report measurements of the proton form factors G(E)p and G(M)p extr acted from elastic scattering in the range 1 less-than-or-equal-to Q2 less-than-or-equal-to 3 (GeV/c)2 with total uncertainties < 15% in G(E )p and < 3% in G(M)p. Comparisons are made to theoretical models, incl uding those based on perturbative QCD, vector-meson dominance, QCD sum rules, and diquark constituents in the proton. The results for G(E)p are somewhat larger than indicated by most theoretical parametrization s, and the ratios of the Pauli and Dirac form factors Q2(F2p/F1p) are lower in value and demonstrate a weaker Q2 dependence than those predi ctions. A global extraction of the elastic form factors from several e xperiments in the range 0.1 < Q2 < 10 (GeV/c)2 is also presented.