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Center-of-mass effects on the quasi-hole spectroscopic factors in the 16O(e,e'p) reaction

D. Van Neck·M. Waroquier·A. E. L. Dieperink·Steven C. Pieper·V. R. Pandharipande
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Abstract

The spectroscopic factors for the low-lying quasi-hole states observed in the 16O(e,e'p)15N reaction are reinvestigated with a variational Monte Carlo calculation for the structure of the initial and final nucleus. A computational error in a previous report is rectified. It is shown that a proper treatment of center-of-mass motion does not lead to a reduction of the spectroscopic factor for $p$-shell quasi-hole states, but rather to a 7% enhancement. This is in agreement with analytical results obtained in the harmonic oscillator model. The center-of-mass effect worsens the discrepancy between present theoretical models and the experimentally observed single-particle strength. We discuss the present status of this problem, including some other mechanisms that may be relevant in this respect.

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D. Van Neck, M. Waroquier, A. E. L. Dieperink, Steven C. Pieper, V. R. Pandharipande. 1998-04-28. Center-of-mass effects on the quasi-hole spectroscopic factors in the 16O(e,e'p) reaction. https://doi.org/10.1103/physrevc.57.2308

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