Measurement of the 12C(e,e'p)11B Two-Body Breakup Reaction at High Missing Momentum Values

The five-fold differential cross section for the C-12(e,e'p)B-11 reaction was determined over a missing momentum range of 200-400 MeV c(-1), in a kinematics regime with x(B) > 1 and Q(2) = 2.0 (GeV c(-1))(2). A comparison of the results with previous lower missing momentum data and with theoretical models are presented. The extracted distorted momentum distribution is shown to be consistent with previous data and extends the range of available data up to 400 MeV c(-1). The theoretical calculations are from two very different approaches, one mean field and the other short range correlated; yet for this system the two approaches show striking agreement with the data and each other up to a missing momentum value of 325 MeV c(-1). For larger momenta, the calculations diverge which is likely due to the factorization approximation used in the short range approach.