Direct Experimental Reconstruction of theppElastic-Scattering Matrix at 579 MeV

We have made, for the first time, a direct reconstruction of the $\mathrm{pp}$ elastic-scattering matrix at 579 MeV from a series of experiments performed at the Schweizerisches Institut für Nuklearforschung polarized-beam line. Fifteen observables consisting of the polarization, two-spin correlation and transfer parameters, and three-spin parameters were measured at seven angles between 66° and 90° (c. m.). The experimental results and reconstructed amplitudes are presented and compared to phase shift analysis.