Neutron-proton elastic scattering spin-spin correlation parameter measurements between 500 and 800 MeV. II. [ital C][sub [ital S][ital S]] and [ital C][sub [ital L][ital S]] at forward c. m. angles

Results are presented for the spin-spin correlation parameters [ital C][sub [ital S][ital S]] and [ital C][sub [ital L][ital S]] for free [ital np] elastic scattering at neutron beam kinetic energies of 484, 634, 720, and 788 MeV and c.m. angles between 25[degree] and 80[degree]. The measurements were performed with a polarized neutron beam and a polarized proton target. These are the first measurements of this type to be reported in the forward angular region with a free polarized neutron beam. The observables [ital C][sub [ital S][ital S]] and [ital C][sub [ital L][ital S]] are both small at all energies, except for [ital C][sub [ital L][ital S]] at 788 MeV, which is larger than phase-shift analysis predictions by more than one standard deviation for most of the measured points.