Measurement of the spin correlation parameter Aoosk in pp elastic scattering from 0.88 to 2.7 GeV

The spin correlation parameter Aoosk was measured using the SATURNE II polarized proton beam and the Saclay frozen spin polarized target. The measurements at 0.88 and 1.1 GeV were carried out in the angular region θCM from 28° to ⋍ 50°. At 0.88 GeV they complete our previous measurements from 45° to 90°. Above 1.1 GeV the measurements presented here cover both regions, extending from gqCM = 28° (at lower energies) or θCM = 18° (at higher energies) to θCM > 90°. The shape of the angular distribution Aoosk (pp) = ƒ(θCM) changes considerably between 1.8 and 2.4 GeV.