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Using 805 pb^-1 of e+e- annihilation data taken with the CLEO-c detector atpsi(3770), sqrt{s}=3770 MeV, we report the first measurements of theelectromagnetic form factors of the Lambda0, Sigma0, Sigma+, Xi0, Xi-, andOmega- hyperons for the large timelike momentum transfer of |Q^2|=14.2 GeV^2.The form factors for the different hyperons are found to vary by nearly afactor two. It is found that |G_M(Lambda0)|=1.66(24) x |G_M(Sigma0)|. TheLambda0 and Sigma0 hyperons have the same uds quark content, but differ intheir isospin, and therefore the spin of the $ud$ quark pair. It is suggestedthat the spatial correlation implied by the singlet spin--isospin configurationin the Lambda0 is an example of strong diquark correlations in the Lambda0, asanticipated by Jaffe and Wilczek. Improved measurements of the branchingfractions of psi(2S) -> p pbar and hyperon--antihyperon pairs are alsoreported.

First Measurements of Timelike Form Factors of the Hyperons, Lambda0, Sigma0, Sigma+, Xi0, Xi-, and Omega-, and Evidence of Diquark Correlations