dorsal/arxiv
View SchemaMeson Photo- and Electroproduction
| Authors | Lothar Tiator |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9401014 |
| URL | https://arxiv.org/abs/nucl-th/9401014 |
Abstract
Photo- and electroproduction of pions and eta-mesons is studied on the nucleon. The formalism of such reactions is presented including polarization degrees of freedom and theoretical approaches are discussed. In particular, the threshold and $\Delta$-resonance region of pion photoproduction is considered and recent developments on low energy theorems (LET) and the E2/C2 quadrupole excitation of the $\Delta$ are presented. For eta photoproduction we show our calculations for the threshold region of the new Mainz experiment and demonstrate the sensitivity of this reaction to the elementary $\eta NN$ coupling and the resonance parameters of the $S_{11}(1535)$. In nuclear applications we point out the importance and advantage of light nuclei as $d$, $^3H$, $^3He$ and $^4He$ for the isospin structure of the reactions as well as for medium effects of the nucleon resonances.
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"date_created": "2026-03-02T18:00:11.987000Z",
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"abstract": "Photo- and electroproduction of pions and eta-mesons is studied on the\nnucleon. The formalism of such reactions is presented including polarization\ndegrees of freedom and theoretical approaches are discussed. In particular, the\nthreshold and $\\Delta$-resonance region of pion photoproduction is considered\nand recent developments on low energy theorems (LET) and the E2/C2 quadrupole\nexcitation of the $\\Delta$ are presented. For eta photoproduction we show our\ncalculations for the threshold region of the new Mainz experiment and\ndemonstrate the sensitivity of this reaction to the elementary $\\eta NN$\ncoupling and the resonance parameters of the $S_{11}(1535)$. In nuclear\napplications we point out the importance and advantage of light nuclei as $d$,\n$^3H$, $^3He$ and $^4He$ for the isospin structure of the reactions as well as\nfor medium effects of the nucleon resonances.",
"arxiv_id": "nucl-th/9401014",
"authors": [
"Lothar Tiator"
],
"categories": [
"nucl-th"
],
"title": "Meson Photo- and Electroproduction",
"url": "https://arxiv.org/abs/nucl-th/9401014"
},
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