Comparison of Polarization Observables in Electron Scattering from the Proton and Deuteron

Abstract

Recoil proton polarization observables were measured for both the $p(\stackrel{\ensuremath{\rightarrow}}{e}{,e}^{\ensuremath{'}}\stackrel{\ensuremath{\rightarrow}}{p})$ and $d(\stackrel{\ensuremath{\rightarrow}}{e}{,e}^{\ensuremath{'}}\stackrel{\ensuremath{\rightarrow}}{p})n$ reactions at two values of ${Q}^{2}$ using a newly commissioned proton focal plane polarimeter at the MIT-Bates Linear Accelerator Center. The hydrogen and deuterium spin-dependent observables ${D}_{\ensuremath{\ell}\ensuremath{\ell}}$ and ${D}_{\ensuremath{\ell}t}$, the induced polarization ${P}_{n}$, and the form factor ratio ${G}_{E}^{p}{/G}_{M}^{p}$ were measured under identical kinematics. The deuterium and hydrogen results are in good agreement with each other and with the plane-wave impulse approximation (PWIA).