APS » PROLA » Phys. Rev. C » Volume 58 » Issue 6

Phys. Rev. C 58, 3205 - 3211 (1998)

Measurement of the interference structure function RLT for the 12C(e,e′p) reaction in the quasielastic region
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M. Holtrop et al.
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Received 10 September 1997; revised 13 August 1998

The coincidence cross section and the interference structure function, RLT, 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 θpq=11°, covering a range in missing energy of Em=0 to 65 MeV. The RLT structure function is found to be consistent with zero for Em>50 MeV, confirming an earlier study which indicated that RL vanishes in this region. The integrated strengths of the p- and s-shell are compared with a distorted wave impulse approximation (DWIA) calculation. The s-shell strength and shape are also compared with a Hartree Fock–random phase approximation (HF-RPA) calculation. The DWIA calculation does not succeed in giving a consistent description of both the cross section data and the extracted RLT response for either shell. The HF-RPA calculation describes the data more consistently, which may be due to the inclusion of 2-body currents in this calculation.


©1998 The American Physical Society

URL: http://link.aps.org/abstract/PRC/v58/p3205
DOI: 10.1103/PhysRevC.58.3205
PACS: 25.30.Dh, 21.10.Jx, 21.60.Jz

* Present address: University of New Hampshire, Durham, NH 03824.
† Present address: TRIUMF, Vancouver, BC, Canada.
‡ Present address: TJNAF, Newport News, VA 23606.
§ Present address: University of Kentucky, Lexington, KY 40506.
** Present address: Massachusetts General Hospital NMR Center, Charlestown, MA 02129.
†† Present address: National and Capodistrian University of Athens, Athens, Greece.
‡‡ Present address: Old Dominion University, Norfolk, VA 23529.
Present address: Florida International University, Miami, FL 33199.
a Present address: University of Virginia, Charlottesville, VA 22903.
b Present address: Kyungpook National University, Taegu 702-701, South Korea.
c Present address: University of Washington, Seattle, WA 98195.
d Present address: SUNY Stony Brook, Stony Brook, NY 11790.
e Present address: Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.

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