dorsal/arxiv
View SchemaCoherent Photoproduction of Dileptons on Light Nuclei - a New Means to Learn about Vector Mesons
| Authors | M. Post, W. Peters, U. Mosel |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9903002 |
| URL | https://arxiv.org/abs/nucl-th/9903002 |
Abstract
In the last years much work has been done to learn about the properties of the $\rho$-meson in nuclear matter. In a calculation of the in-medium spectralfunction of the $\rho$ we find that it is strongly modified by baryonic resonances, especially the $D_{13}(1520)$, through its coupling to resonance-hole states. In order to test the predictions of a model for the in-medium properties of the $\rho$-meson so far mostly heavy-ion collision have been used. We argue that the coherent photoproduction of $\rho$-mesons yields additional information about the nature of the medium modification. It can be shown that the production amplitude is sensitive on the momentum dependence of the $\rho$-selfenergy. This can be used to distinguish experimentally between various models for the $\rho$ in matter.
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"abstract": "In the last years much work has been done to learn about the properties of\nthe $\\rho$-meson in nuclear matter. In a calculation of the in-medium\nspectralfunction of the $\\rho$ we find that it is strongly modified by baryonic\nresonances, especially the $D_{13}(1520)$, through its coupling to\nresonance-hole states. In order to test the predictions of a model for the\nin-medium properties of the $\\rho$-meson so far mostly heavy-ion collision have\nbeen used. We argue that the coherent photoproduction of $\\rho$-mesons yields\nadditional information about the nature of the medium modification. It can be\nshown that the production amplitude is sensitive on the momentum dependence of\nthe $\\rho$-selfenergy. This can be used to distinguish experimentally between\nvarious models for the $\\rho$ in matter.",
"arxiv_id": "nucl-th/9903002",
"authors": [
"M. Post",
"W. Peters",
"U. Mosel"
],
"categories": [
"nucl-th"
],
"title": "Coherent Photoproduction of Dileptons on Light Nuclei - a New Means to Learn about Vector Mesons",
"url": "https://arxiv.org/abs/nucl-th/9903002"
},
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