Measurements of the two and three spin-index observables in n p elastic scattering between 0.80 and 1.10 GeV

We present data of several rescattering observables measured inn p elastic scattering between 0.80 and 1.10 GeV. The SATURNE II polarized beam of free neutrons obtained from the break-up of polarized deuterons was scattered on the Saclay polarized frozen-spin proton target. Three different configurations of beam and target polarization directions were used: the observablesD onon andK onno were measured with the normal-normal spin configuration at eight energies;N onkk ,D os″ok andK os″ko were determined with the longitudinal-longitudinal configuration at six energies;N onsk ,D os″ok andK os″so with the sideway-longitudinal configuration at six energies. Part of the data was obtained with an unpolarized CH2 target where only the two spin-index polarization transfer parametersK os″ko andK os″so were determined. Data are compared with phase shift analyses predictions and with the LAMPF results at 0.788 GeV. Present results are the first measurements of rescattering observables above 0.80 GeV. They provide an important contribution to any future theoretical or phenomenological analysis.