dorsal/arxiv
View SchemaHigher Nucleon Resonances in Exclusive $(\gamma, \pi N)$ Reactions on Nuclei
| Authors | Frank X. Lee, C. Bennhold, S. S. Kamalov, L. E. Wright |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9806024 |
| URL | https://arxiv.org/abs/nucl-th/9806024 |
| DOI | 10.1103/PhysRevC.60.034605 |
| Journal | Phys.Rev. C60 (1999) 034605 |
Abstract
We report calculations for exclusive pion photoproduction on nuclei beyond the first resonance region in the distorted wave impulse approximation. The elementary operator contains contributions from the resonances $P_{33}(1232)$, $P_{11}(1440)$, $D_{13}(1520)$, $D_{33}(1740)$, $S_{11}(1535)$, $S_{11}(1650)$, and $F_{15}(1680)$, in addition to the usual Born plus vector meson contributions. It gives a good description of single pion photoproduction data up to about 1.1 GeV. Final state interactions are incorporated via optical potentials and are found to be substantial in the coincidence cross sections, but insensitive to the photon asymmetry. Clear signatures of possible medium modifications of the $D_{13}$ and $F_{15}$ resonances are predicted.
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"abstract": "We report calculations for exclusive pion photoproduction on nuclei beyond\nthe first resonance region in the distorted wave impulse approximation. The\nelementary operator contains contributions from the resonances $P_{33}(1232)$,\n$P_{11}(1440)$, $D_{13}(1520)$, $D_{33}(1740)$, $S_{11}(1535)$, $S_{11}(1650)$,\nand $F_{15}(1680)$, in addition to the usual Born plus vector meson\ncontributions. It gives a good description of single pion photoproduction data\nup to about 1.1 GeV. Final state interactions are incorporated via optical\npotentials and are found to be substantial in the coincidence cross sections,\nbut insensitive to the photon asymmetry. Clear signatures of possible medium\nmodifications of the $D_{13}$ and $F_{15}$ resonances are predicted.",
"arxiv_id": "nucl-th/9806024",
"authors": [
"Frank X. Lee",
"C. Bennhold",
"S. S. Kamalov",
"L. E. Wright"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.60.034605",
"journal_ref": "Phys.Rev. C60 (1999) 034605",
"title": "Higher Nucleon Resonances in Exclusive $(\\gamma, \\pi N)$ Reactions on Nuclei",
"url": "https://arxiv.org/abs/nucl-th/9806024"
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