dorsal/arxiv
View SchemaForm Factors of Baryons in a Confining and Covariant Diquark-Quark Model
| Authors | M. Oettel, S. Ahlig, R. Alkofer, C. Fischer |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9910079 |
| URL | https://arxiv.org/abs/nucl-th/9910079 |
| DOI | 10.1063/1.1303012 |
Abstract
We treat baryons as bound states of scalar or axialvector diquarks and a constituent quark which interact through quark exchange. This description results as an approximation to the relativistic Faddeev equation for three quarks which yields an effective Bethe-Salpeter equation. Octet and decuplet masses and fully four-dimensional wave functions have been computed for two cases: assuming an essentially pointlike diquark on the one hand, and a diquark with internal structure on the other hand. Whereas the differences in the mass spectrum are fairly small, the nucleon electromagnetic form factors are greatly improved assuming a diquark with structure. First calculations to the pion-nucleon form factor also suggest improvements.
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"abstract": "We treat baryons as bound states of scalar or axialvector diquarks and a\nconstituent quark which interact through quark exchange. This description\nresults as an approximation to the relativistic Faddeev equation for three\nquarks which yields an effective Bethe-Salpeter equation. Octet and decuplet\nmasses and fully four-dimensional wave functions have been computed for two\ncases: assuming an essentially pointlike diquark on the one hand, and a diquark\nwith internal structure on the other hand. Whereas the differences in the mass\nspectrum are fairly small, the nucleon electromagnetic form factors are greatly\nimproved assuming a diquark with structure. First calculations to the\npion-nucleon form factor also suggest improvements.",
"arxiv_id": "nucl-th/9910079",
"authors": [
"M. Oettel",
"S. Ahlig",
"R. Alkofer",
"C. Fischer"
],
"categories": [
"nucl-th"
],
"doi": "10.1063/1.1303012",
"title": "Form Factors of Baryons in a Confining and Covariant Diquark-Quark Model",
"url": "https://arxiv.org/abs/nucl-th/9910079"
},
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