Comparison of the 40 Ca(e, e'p) Cross Section at Low Momentum Transfer Region with Relativistic Calculations

The (e, e' p0) cross section of 40 Ca measured using a 199.53 MeV continuous electron beam is compared with theoretical calculations based on the relativistic distorted-wave impulse approximation (RDWIA). The theoretical values overestimate the experimental ones by a factor of 2 when the spectroscopic factor is obtained from the (e, e'p) experiment in parallel kinematics, or by a factor of 1.4 when spectroscopic factor is obtained in constant (ω, q) kinematics.