dorsal/arxiv
View SchemaElectromagnetic properties of diquarks
| Authors | Pieter Maris |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0409008 |
| URL | https://arxiv.org/abs/nucl-th/0409008 |
| DOI | 10.1007/s00601-004-0064-0 |
| Journal | Few Body Syst. 35 (2004) 117-127 |
Abstract
Diquark correlations play an important role in hadron physics. The properties of diquarks can be obtained from the corresponding bound state equation. Using a model for the effective quark-quark interaction that has proved successful in the light meson sector, we solve the scalar diquark Bethe-Salpeter equations and use the obtained Bethe-Salpeter amplitudes to compute the diquarks' electromagnetic form factors. The scalar ud diquark charge radius is about 8% larger than the pion charge radius, indicating that these diquarks are somewhat larger in size than the corresponding mesons. We also provide analytic fits for the form factor over a moderate range in Q^2, which may be useful, for example, in building quark-diquark models of nucleons.
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"abstract": "Diquark correlations play an important role in hadron physics. The properties\nof diquarks can be obtained from the corresponding bound state equation. Using\na model for the effective quark-quark interaction that has proved successful in\nthe light meson sector, we solve the scalar diquark Bethe-Salpeter equations\nand use the obtained Bethe-Salpeter amplitudes to compute the diquarks\u0027\nelectromagnetic form factors. The scalar ud diquark charge radius is about 8%\nlarger than the pion charge radius, indicating that these diquarks are somewhat\nlarger in size than the corresponding mesons. We also provide analytic fits for\nthe form factor over a moderate range in Q^2, which may be useful, for example,\nin building quark-diquark models of nucleons.",
"arxiv_id": "nucl-th/0409008",
"authors": [
"Pieter Maris"
],
"categories": [
"nucl-th"
],
"doi": "10.1007/s00601-004-0064-0",
"journal_ref": "Few Body Syst. 35 (2004) 117-127",
"title": "Electromagnetic properties of diquarks",
"url": "https://arxiv.org/abs/nucl-th/0409008"
},
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