Three-nucleon interactions: Evidence from polarized pd elastic scattering

摘要

Advances in precise computation of three-body reaction observables have spurred new interest in experimental measurements of proton deuteron elastic scattering, especially with regard to spin effects. Developments in spin-polarized internal targets for storage rings have permitted measurements of 197 MeV polarized protons scattering from vector polarized deuterons. This work presents measurements of the polarization observables A(y), iT(11), and C-y,C-y in proton-deuteron elastic scattering. When compared to calculations with and without three-nucleon forces, the measurements indicate that three-nucleon forces make a significant contribution to the observables. This work indicates that three-body forces derived from static nuclear properties appear to be crucial to the description of dynamical properties. [References: 35]