A Measurement of the Interference Structure Function, R_LT, for the 12C(e,e'p) reaction in the Quasielastic Region

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  • 12 September 1997
Abstract
The coincidence cross-section and the interference structure function, R_LT, were measured for the 12C(e,e'p)11B reaction at quasielastic kinematics and central momentum transfer of q=400MeV/c. The measurement was at an opening angle of theta_pq=11 degrees covering a range in missing energy of E_m= 0 to 65 MeV. The R_LT structure function is found to be consistent with zero for E_m > 50 MeV, confirming an earlier study which indicated that R_L vanishes in this region. The integrated strengths of the p- and s-shell are compared with a DWIA calculation. The s-shell strength and shape are compared with a HF-RPA calculation. The DWIA calculation overestimates the cross sections for p- and s-shell proton knockout, while agreeing with the extracted R_LT value for both shells. The HF-RPA calculation describes the data more consistently, which may be due to the inclusion of 2-body currents in this calculation.

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