Quasielastic thinsp{sup 12}C(e,e{sup {prime}}p) reaction at high momentum transfer
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
- Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12181 (United States)
- Department of Physics, University of New Hampshire, Durham, New Hampshire 03824 (United States)
- Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742 (United States)
- Department of Physics and Astronomy, California State University, Los Angeles, California 90032 (United States)
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23185 (United States)
We measured the {sup 12}C(e,e{sup {prime}}p) cross section as a function of missing energy in parallel kinematics for (q,{omega})=(970 MeV/c, 330 MeV) and (990 MeV/c, 475 MeV). At {omega}=475 MeV, at the maximum of the quasielastic peak, there is a large continuum (E{sub m}{gt}50 MeV) cross section extending out to the deepest missing energy measured, amounting to almost 50{percent} of the measured cross section. The ratio of data to distorted-wave impulse approximation (DWIA) calculation is 0.4 for both {ital p} and {ital s} shells. At {omega}=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 {ital p} shell and 1.0 for the {ital s} shell. We infer that one or more mechanisms that increase with {omega} transform some of the single-nucleon knockouts into a multinucleon knockout, decreasing the valence knockout cross section and increasing the continuum cross section. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 289078
- Journal Information:
- Physical Review, C, Vol. 59, Issue 1; Other Information: PBD: Jan 1999
- Country of Publication:
- United States
- Language:
- English
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