학술논문
A Measurement of the Interference Structure Function, R_LT, for the 12C(e,e'p) reaction in the Quasielastic Region
Document Type
Working Paper
Author
Holtrop, M.; Jordan, D.; McIlvain, T.; Alarcon, R.; Beck, R.; Bertozzi, W.; Bhushan, V.; Boeglin, W.; Chen, J. P.; Dale, D.; Dodson, G.; Dolfini, S.; Dow, K.; Dzengeleski, J.; Epstein, M. B.; Farkhondeh, M.; Gilad, S.; Gorgen, J.; Joo, K.; Kelsey, J.; Kim, W.; Laszewski, R.; Lourie, R.; Mandeville, J.; Margaziotis, D.; Martinez, D.; Miskimen, R.; Papanicolas, C.; Penn, S.; Sapp, W.; Sarty, A. J.; Tieger, D.; Tschalaer, C.; Turchinetz, W.; Warren, G.; Weinstein, L.; Williamson, S.
Source
Phys.Rev.C58:3205-3211,1998
Subject
Language
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=400 MeV/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 Distorted Wave Impulse Approximation calculation. The s-shell strength and shape are compared with a Hartree Fock-Random Phase Approximation calculation. The DWIA calculation overestimates the cross sections for p- and s-shell proton knockout as expected, but surprisingly agrees 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.
Comment: 8 Pages LaTex, 5 postscript figures. Submitted to Phys. Rev. C
Comment: 8 Pages LaTex, 5 postscript figures. Submitted to Phys. Rev. C