Rigorous calculations and measurements of Ay( theta ) for n+d elastic-scattering and breakup processes.

Abstract

The vector analyzing power for the $n+d\ensuremath{\rightarrow}n+n+p$ breakup reaction was measured at 12 MeV. Data for $n\ensuremath{-}p$ final-state interaction and $n\ensuremath{-}p$ quasifree scattering, along with elastic-scattering data, are compared to rigorous three-nucleon calculations using the Paris and Bonn $N\ensuremath{-}N$ potentials. Calculations agree with the quasifree data and with the elastic and $n\ensuremath{-}p$ final-state-interaction data except around ${\ensuremath{\theta}}_{\mathrm{c}.\mathrm{m}.}=120\ifmmode^\circ\else\textdegree\fi{}$.