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, S. C. Pieper, V. R. Pandharipande

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Abstract

Published in: Phys. Rev. C 57 (1998) 2308-2315 Citing articles (CrossRef) citations recorded in [Science Citation Index] 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.
Original languageEnglish
Number of pages14
JournalPhysical Review C
Volume57
Issue number5
Publication statusPublished - 1998

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