Quasielastic 12C(e,e'p) Reaction at High Momentum Transfer
Abstract
We measured the 12C(e,e'p) cross section as a function of missing energy in parallel kinematics for (q,w) = (970 MeV/c, 330 MeV) and (990 MeV/c, 475 MeV). At w=475 MeV, at the maximum of the quasielastic peak, there is a large continuum (E_m > 50 MeV) cross section extending out to the deepest missing energy measured, amounting to almost 50% of the measured cross section. The ratio of data to DWIA calculation is 0.4 for both the p- and s-shells. At w=330 MeV, well below the maximum of the quasielastic peak, the continuum cross section is much smaller and the ratio of data to DWIA calculation is 0.85 for the p-shell and 1.0 for the s-shell. We infer that one or more mechanisms that increase with transform some of the single-nucleon-knockout into multinucleon knockout, decreasing the valence knockout cross section and increasing the continuum cross section.
Keywords
Cite
@article{arxiv.nucl-ex/9811012,
title = {Quasielastic 12C(e,e'p) Reaction at High Momentum Transfer},
author = {J. H. Morrison and H. Baghaei and W. Bertozzi and S. Gilad and J. Glickman and C. E. Hyde-Wright and N. Kalantar-Nayestanaki and R. W. Lourie and S. Penn and P. E. Ulmer and L. B. Weinstein and B. H. Cottman and L. Ghedira and E. J. Winhold and J. R. Calarco and J. Wise and P. Boberg and C. C. Chang and D. Zhang and K. Aniol and M. B. Epstein and D. J. Margaziotis and J. M. Finn and C. Perdrisat and V. Punjabi},
journal= {arXiv preprint arXiv:nucl-ex/9811012},
year = {2008}
}
Comments
14 pages, 7 figures, Revtex (multicol, prc and aps styles), to appear in Phys Rev C