NO EVIDENCE FOR MEDIUM EFFECTS IN THE C-12(E, EP)B-11(GS) REACTION

The C-12(e, e'p)B-11(g.s.) reaction has been measured in parallel and anti-parallel kinematics over a p(m) range of -120 < p(m) < 120 MeV/c at a central T-p of 90 MeV. In contrast to previous measurements at NIKHEF, both kinematics can be described without enhancement of the transverse form factor of the bound proton (eta = 0.98(5)). The spectroscopic factor for this transition as determined with the new Mainz data (S-alpha = 1.54(5)) is 22% smaller than the NIKHEF value.