dorsal/arxiv
View SchemaRDWIA analysis of 12C(e,e'p) for Q^2 < 2 (GeV/c)^2
| Authors | James J. Kelly |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0501079 |
| URL | https://arxiv.org/abs/nucl-th/0501079 |
| DOI | 10.1103/PhysRevC.71.064610 |
| Journal | Phys.Rev. C71 (2005) 064610 |
Abstract
We analyze data for 12C(e,e'p) with Q^2 < 2 (GeV/c)^2 using the relativistic distorted-wave impulse approximation (RDWIA) based upon Dirac-Hartree wave functions. The 1p normalization extracted from data for Q^2 > 0.6 (GeV/c)^2 is approximately 0.87, independent of Q^2, which is consistent with the predicted depletion by short-range correlations. The total 1p and 1s strength for E_m < 80 MeV approaches 100% of IPSM, consistent with a continuum contribution for 30 < E_m < 80 MeV of about 12% of IPSM. Similarly, a scale factor of 1.12 brings RDWIA calculations into good agreement with 12C(e,e'p) data for transparency. We also analyzed low Q^2 data from which a recent NDWIA analysis suggested that spectroscopic factors might depend strongly upon the resolution of the probe. We find that momentum distributions for their empirical Woods-Saxon wave functions fit to low Q^2 data for parallel kinematics are too narrow to reproduce data for quasiperpendicular kinematics, especially for larger Q^2, and are partly responsible for reducing fitted normalization factors.
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"abstract": "We analyze data for 12C(e,e\u0027p) with Q^2 \u003c 2 (GeV/c)^2 using the relativistic\ndistorted-wave impulse approximation (RDWIA) based upon Dirac-Hartree wave\nfunctions. The 1p normalization extracted from data for Q^2 \u003e 0.6 (GeV/c)^2 is\napproximately 0.87, independent of Q^2, which is consistent with the predicted\ndepletion by short-range correlations. The total 1p and 1s strength for E_m \u003c\n80 MeV approaches 100% of IPSM, consistent with a continuum contribution for 30\n\u003c E_m \u003c 80 MeV of about 12% of IPSM. Similarly, a scale factor of 1.12 brings\nRDWIA calculations into good agreement with 12C(e,e\u0027p) data for transparency.\nWe also analyzed low Q^2 data from which a recent NDWIA analysis suggested that\nspectroscopic factors might depend strongly upon the resolution of the probe.\nWe find that momentum distributions for their empirical Woods-Saxon wave\nfunctions fit to low Q^2 data for parallel kinematics are too narrow to\nreproduce data for quasiperpendicular kinematics, especially for larger Q^2,\nand are partly responsible for reducing fitted normalization factors.",
"arxiv_id": "nucl-th/0501079",
"authors": [
"James J. Kelly"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.71.064610",
"journal_ref": "Phys.Rev. C71 (2005) 064610",
"title": "RDWIA analysis of 12C(e,e\u0027p) for Q^2 \u003c 2 (GeV/c)^2",
"url": "https://arxiv.org/abs/nucl-th/0501079"
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