RELATIVISTIC ANALYSIS OF THE PB-208(E,E'P)TL-207 REACTION AT HIGH MOMENTUM

The recent Pb-208(e,e'p)Tl-207 data from NIKHEF-K at high missing mome ntum (p(m)>300 MeV/c) are compared to theoretical results obtained wit h a fully relativistic formalism previously applied to analyze data on the low missing momentum (p(m)<300 MeV/c) region. The same relativist ic optical potential and mean-field wave functions are used in the two p(m) regions. The spectroscopic factors of the various shells are ext racted from the analysis of the low-p(m) data and then used in the hig h-p(m) region. In contrast to previous analyses using a nonrelativisti c mean-field formalism, we do not find a substantial deviation from th e mean-field predictions other than that of the spectroscopic factors, which appear to be consistent with both low- and high-p(m) data. We f ind that the difference between results of relativistic and nonrelativ istic formalisms is enhanced in the p(m)<0 region that will be interes ting to explore experimentally.