dorsal/arxiv
View SchemaSpin-dependent correlations and the semi-exclusive ^{16}O(e,e'p) reaction
| Authors | Stijn Janssen, Jan Ryckebusch, Wim Van Nespen, Dimitri Debruyne |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9911054 |
| URL | https://arxiv.org/abs/nucl-th/9911054 |
| DOI | 10.1016/S0375-9474(00)00058-0 |
| Journal | Nucl.Phys. A672 (2000) 285-309 |
Abstract
The effect of central, tensor and spin-isospin nucleon-nucleon correlations upon semi-exclusive ^{16}O(e,e'p) reactions is studied for Q^2 and Bjorken x values in the range $0.2 \lesssim Q^2 \lesssim 1.1 (GeV/c)^2$ and 0.15 $\lesssim$ x $\lesssim$ 2. The fully unfactorized calculations are performed in a framework that accounts not only for the dynamical coupling of virtual photons to correlated nucleon pairs but also for meson-exchange and $\Delta_{33}$-isobar currents. Tensor correlations are observed to produce substantially larger amounts of semi-exclusive ^{16}O(e,e'p) strength than central correlations do and are predominantly manifest in the proton-neutron knockout channel. With the exception of the $x \approx 2$ case, in all kinematical situations studied the meson-exchange and isobar currents are a strong source of A(e,e'p) strength at deep missing energies. This feature gives the A(e,e'p) strength at deep missing energies a pronounced transverse character.
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"abstract": "The effect of central, tensor and spin-isospin nucleon-nucleon correlations\nupon semi-exclusive ^{16}O(e,e\u0027p) reactions is studied for Q^2 and Bjorken x\nvalues in the range $0.2 \\lesssim Q^2 \\lesssim 1.1 (GeV/c)^2$ and 0.15\n$\\lesssim$ x $\\lesssim$ 2. The fully unfactorized calculations are performed in\na framework that accounts not only for the dynamical coupling of virtual\nphotons to correlated nucleon pairs but also for meson-exchange and\n$\\Delta_{33}$-isobar currents. Tensor correlations are observed to produce\nsubstantially larger amounts of semi-exclusive ^{16}O(e,e\u0027p) strength than\ncentral correlations do and are predominantly manifest in the proton-neutron\nknockout channel. With the exception of the $x \\approx 2$ case, in all\nkinematical situations studied the meson-exchange and isobar currents are a\nstrong source of A(e,e\u0027p) strength at deep missing energies. This feature gives\nthe A(e,e\u0027p) strength at deep missing energies a pronounced transverse\ncharacter.",
"arxiv_id": "nucl-th/9911054",
"authors": [
"Stijn Janssen",
"Jan Ryckebusch",
"Wim Van Nespen",
"Dimitri Debruyne"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0375-9474(00)00058-0",
"journal_ref": "Nucl.Phys. A672 (2000) 285-309",
"title": "Spin-dependent correlations and the semi-exclusive ^{16}O(e,e\u0027p) reaction",
"url": "https://arxiv.org/abs/nucl-th/9911054"
},
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