dorsal/arxiv
View SchemaQuasifree kaon-photoproduction from nuclei in a relativistic approach
| Authors | L. J. Abu-Raddad, J. Piekarewicz |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9906066 |
| URL | https://arxiv.org/abs/nucl-th/9906066 |
| DOI | 10.1103/PhysRevC.61.014604 |
| Journal | Phys.Rev. C61 (2000) 014604 |
Abstract
We compute the recoil polarization of the lambda-hyperon and the photon asymmetry for the quasifree photoproduction of kaons in a relativistic impulse-approximation approach. Our motivation for studying polarization observables is threefold. First, polarization observables are more effective discriminators of subtle dynamics than the unpolarized cross section. Second, earlier nonrelativistic calculations suggest an almost complete insensitivity of polarization observables to distortions effects. Finally, this insensitivity entails an enormous simplification in the theoretical treatment. Indeed, by introducing the notion of a ``bound-nucleon propagator'' we exploit Feynman's trace techniques to develop closed-form, analytic expressions for all photoproduction observables. Moreover, our results indicate that polarization observables are also insensitive to relativistic effects and to the nuclear target. Yet, they are sensitive to the model parameters, making them ideal tools for the study of modifications to the elementary amplitude --- such as in the production, propagation, and decay of nucleon resonances --- in the nuclear medium.
{
"annotation_id": "f26e5905-0a60-4f2e-ba49-9830360731d8",
"date_created": "2026-03-02T18:00:25.829000Z",
"date_modified": "2026-03-02T18:00:25.829000Z",
"file_hash": "bd8098bac3d00b06d1e2d8afd8941d10acadd16c7cf8ff1c21d69df490268291",
"private": false,
"record": {
"abstract": "We compute the recoil polarization of the lambda-hyperon and the photon\nasymmetry for the quasifree photoproduction of kaons in a relativistic\nimpulse-approximation approach. Our motivation for studying polarization\nobservables is threefold. First, polarization observables are more effective\ndiscriminators of subtle dynamics than the unpolarized cross section. Second,\nearlier nonrelativistic calculations suggest an almost complete insensitivity\nof polarization observables to distortions effects. Finally, this insensitivity\nentails an enormous simplification in the theoretical treatment. Indeed, by\nintroducing the notion of a ``bound-nucleon propagator\u0027\u0027 we exploit Feynman\u0027s\ntrace techniques to develop closed-form, analytic expressions for all\nphotoproduction observables. Moreover, our results indicate that polarization\nobservables are also insensitive to relativistic effects and to the nuclear\ntarget. Yet, they are sensitive to the model parameters, making them ideal\ntools for the study of modifications to the elementary amplitude --- such as in\nthe production, propagation, and decay of nucleon resonances --- in the nuclear\nmedium.",
"arxiv_id": "nucl-th/9906066",
"authors": [
"L. J. Abu-Raddad",
"J. Piekarewicz"
],
"categories": [
"nucl-th",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.61.014604",
"journal_ref": "Phys.Rev. C61 (2000) 014604",
"title": "Quasifree kaon-photoproduction from nuclei in a relativistic approach",
"url": "https://arxiv.org/abs/nucl-th/9906066"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "6518812a-a936-4795-8819-d7cbe624760d",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}