Impulse Approximation limitations to the $(e,e'p)$ reaction on $^{208}$Pb: identifying relativistic effects in the nuclear medium via A$_{TL}$ measurements

Experiment E06007 at Jefferson Lab measured cross sections for the $(e,e'p)$ reaction at constant $(\textbf{q},\omega)$ for Q$^2$ = 0.81 GeV$^2$ over a range of missing momenta from 0 to $\pm$ 500 MeV/c. A controversial issue over the last decades has been the role of relativity in the description of nuclei. A distinctive signature of dynamical relativistic effects in the nucleon wave function is the asymmetry, A$_{TL}$ in the cross section measured forward or backward of the three momentum transfer \textbf{q}. Results for the integrated cross sections for producing the low lying states of $^{207}$Tl for both positive and negative missing momenta will be presented and compared to relativistic and nonrelativistic theoretical predictions.