dorsal/arxiv
View SchemaChannel Coupling in $A(\vec{e},e' \vec{N})B$ Reactions
| Authors | James J. Kelly |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9809090 |
| URL | https://arxiv.org/abs/nucl-th/9809090 |
| DOI | 10.1103/PhysRevC.59.3256 |
| Journal | Phys.Rev. C59 (1999) 3256-3274 |
Abstract
The sensitivity of momentum distributions, recoil polarization observables, and response functions for nucleon knockout by polarized electrons to channel coupling in final-state interactions is investigated using a model in which both the distorting and the coupling potentials are constructed by folding density-dependent effective interactions with nuclear transition densities. Calculations for $^{16}$O are presented for 200 and 433 MeV ejectile energies, corresponding to proposed experiments at MAMI and TJNAF, and for $^{12}$C at 70 and 270 MeV, corresponding to experiments at NIKHEF and MIT-Bates. The relative importance of charge exchange decreases as the ejectile energy increases, but remains significant for 200 MeV. Both proton and neutron knockout cross sections for large recoil momenta, $p_m > 300$ MeV/c, are substantially affected by inelastic couplings even at 433 MeV. Significant effects on the cross section for neutron knockout are also predicted at smaller recoil momenta, especially for low energies. Polarization transfer for proton knockout is insensitive to channel coupling, even for fairly low ejectile energies, but polarization transfer for neutron knockout retains nonnegligible sensitivity to channel coupling for energies up to about 200 MeV. The present results suggest that possible medium modifications of neutron and proton electromagnetic form factors for $Q^2 \gtrsim 0.5 (GeV/c)^2$ can be studied using recoil polarization with relatively little sensitivity due to final state interactions.
{
"annotation_id": "6a09304d-765a-4ca2-b835-907ba98800e2",
"date_created": "2026-03-02T18:00:22.310000Z",
"date_modified": "2026-03-02T18:00:22.310000Z",
"file_hash": "997646dabe117f5be1635065008d8a2c97877b8af8e7ee480910c3cadb5184d0",
"private": false,
"record": {
"abstract": "The sensitivity of momentum distributions, recoil polarization observables,\nand response functions for nucleon knockout by polarized electrons to channel\ncoupling in final-state interactions is investigated using a model in which\nboth the distorting and the coupling potentials are constructed by folding\ndensity-dependent effective interactions with nuclear transition densities.\nCalculations for $^{16}$O are presented for 200 and 433 MeV ejectile energies,\ncorresponding to proposed experiments at MAMI and TJNAF, and for $^{12}$C at 70\nand 270 MeV, corresponding to experiments at NIKHEF and MIT-Bates. The relative\nimportance of charge exchange decreases as the ejectile energy increases, but\nremains significant for 200 MeV. Both proton and neutron knockout cross\nsections for large recoil momenta, $p_m \u003e 300$ MeV/c, are substantially\naffected by inelastic couplings even at 433 MeV. Significant effects on the\ncross section for neutron knockout are also predicted at smaller recoil\nmomenta, especially for low energies. Polarization transfer for proton knockout\nis insensitive to channel coupling, even for fairly low ejectile energies, but\npolarization transfer for neutron knockout retains nonnegligible sensitivity to\nchannel coupling for energies up to about 200 MeV. The present results suggest\nthat possible medium modifications of neutron and proton electromagnetic form\nfactors for $Q^2 \\gtrsim 0.5 (GeV/c)^2$ can be studied using recoil\npolarization with relatively little sensitivity due to final state\ninteractions.",
"arxiv_id": "nucl-th/9809090",
"authors": [
"James J. Kelly"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.59.3256",
"journal_ref": "Phys.Rev. C59 (1999) 3256-3274",
"title": "Channel Coupling in $A(\\vec{e},e\u0027 \\vec{N})B$ Reactions",
"url": "https://arxiv.org/abs/nucl-th/9809090"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "8095a246-aa70-4558-bddb-fa88f7b2135b",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}