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

Recoil proton polarization observables were measured for both the $p\left(\overrightarrow{e}{,e}^{\prime }\overrightarrow{p}\right)$ and $d\left(\overrightarrow{e}{,e}^{\prime }\overrightarrow{p}\right)n$ 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 $D_{\ell \ell }$ and $D_{\ell t}$, 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).