Experimental search for evidence of the three‐nucleon force and a new analysis method

A research program with the aim of investigating the spin dependence of the three nucelon continuum in p d collisions at intermediate energies was carried out at IUCF using the Polarized INternal Target Experiments (PINTEX) facility. In the elastic scattering experiment at 135 and 200 MeV proton beam energies a total of 15 independent spin observables were obtained. The breakup experiment was done with a vector and tensor polarized deuteron beam of 270 MeV and an internal polarized hydrogen gas target. We developed a novel technique for the analysis of the breakup observables, the sampling method. The new approach takes into account acceptance and non‐uniformities of detection efficiencies and is suitable for any kinematically complete experiment with three particles in the final state.