dorsal/arxiv
View SchemaMagnetic moments and electromagnetic radii of nucleon and $\Delta(1232)$ in an extended GBE model
| Authors | Jun He, Yu-Bing Dong |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0404011 |
| URL | https://arxiv.org/abs/nucl-th/0404011 |
| DOI | 10.1088/0253-6102/43/1/027 |
| Journal | Commun.Theor.Phys.43:139-146,2005 |
Abstract
We derive the exchange currents of pseudoscalar, vector, and scalar mesons from Feynman diagrams, and use them to calculate the magnetic form factors of nucleon and $\Delta(1232)$. The magnetic moments and electromagnetic radii are obtained by using those form factors and the parameters determined from the masses of nucleon and $\Delta(1232)$. We find the magnetic moments and electromagnetic radii of nucleon and $\Delta(1232)$ can be produced very well in the extended Goldstone-boson-exchange model (GBE) in which all of pseudoscalar, vector and scalar meson nonet are included. The magnetic moments of $\Delta(1232)$ are closer to experiment values and results from lattice calculation than the results obtained by the model without other mesons except for pion and sigma.
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"abstract": "We derive the exchange currents of pseudoscalar, vector, and scalar mesons\nfrom Feynman diagrams, and use them to calculate the magnetic form factors of\nnucleon and $\\Delta(1232)$. The magnetic moments and electromagnetic radii are\nobtained by using those form factors and the parameters determined from the\nmasses of nucleon and $\\Delta(1232)$. We find the magnetic moments and\nelectromagnetic radii of nucleon and $\\Delta(1232)$ can be produced very well\nin the extended Goldstone-boson-exchange model (GBE) in which all of\npseudoscalar, vector and scalar meson nonet are included. The magnetic moments\nof $\\Delta(1232)$ are closer to experiment values and results from lattice\ncalculation than the results obtained by the model without other mesons except\nfor pion and sigma.",
"arxiv_id": "nucl-th/0404011",
"authors": [
"Jun He",
"Yu-Bing Dong"
],
"categories": [
"nucl-th"
],
"doi": "10.1088/0253-6102/43/1/027",
"journal_ref": "Commun.Theor.Phys.43:139-146,2005",
"title": "Magnetic moments and electromagnetic radii of nucleon and $\\Delta(1232)$ in an extended GBE model",
"url": "https://arxiv.org/abs/nucl-th/0404011"
},
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