dorsal/arxiv
View Schemaeta-meson photoproduction off protons and deuterons
| Authors | C. Deutsch-Sauermann, B. Friman, W. Noerenberg |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9701022 |
| URL | https://arxiv.org/abs/nucl-th/9701022 |
| DOI | 10.1016/S0370-2693(97)00886-1 |
| Journal | Phys.Lett. B409 (1997) 51-57 |
Abstract
We present a unitary and gauge-invariant model with coupled channels, which provides a consistent description of pion photoproduction off nucleons in the E$_{0+}$ channel and eta-meson photoproduction off protons and deuterons. An effective field theory with hadrons and photons is constructed, which includes non-resonant Born terms as well as the S$_{11}$(1535) and S$_{11}$(1650) baryon resonances. Due to the coupling between the channels, the production of eta-mesons is strongly affected by the S$_{11}$(1650) although its direct coupling to the $\eta$N channel is negligible. The rho- and omega-meson exchange terms are important for achieving a consistent description of both pion- and photon-induced reactions.
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"abstract": "We present a unitary and gauge-invariant model with coupled channels, which\nprovides a consistent description of pion photoproduction off nucleons in the\nE$_{0+}$ channel and eta-meson photoproduction off protons and deuterons. An\neffective field theory with hadrons and photons is constructed, which includes\nnon-resonant Born terms as well as the S$_{11}$(1535) and S$_{11}$(1650) baryon\nresonances. Due to the coupling between the channels, the production of\neta-mesons is strongly affected by the S$_{11}$(1650) although its direct\ncoupling to the $\\eta$N channel is negligible. The rho- and omega-meson\nexchange terms are important for achieving a consistent description of both\npion- and photon-induced reactions.",
"arxiv_id": "nucl-th/9701022",
"authors": [
"C. Deutsch-Sauermann",
"B. Friman",
"W. Noerenberg"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0370-2693(97)00886-1",
"journal_ref": "Phys.Lett. B409 (1997) 51-57",
"title": "eta-meson photoproduction off protons and deuterons",
"url": "https://arxiv.org/abs/nucl-th/9701022"
},
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