dorsal/arxiv
View SchemaThe Pion-Nucleon Form Factor From QCD Sum Rules
| Authors | Thomas Meissner |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9506030 |
| URL | https://arxiv.org/abs/nucl-th/9506030 |
| DOI | 10.1103/PhysRevC.52.3386 |
| Journal | Phys.Rev.C52:3386-3392,1995 |
Abstract
QCD sum rules are used to calculate the $q^2$ dependence of the $\pi NN$ coupling $g_{\pi NN} (q^2)$ in the spacelike region $0.5 \ {\mbox{GeV}}^2 \lesssim q^2 \lesssim 1.5\ {\mbox{GeV}}^2$. We study the Borel sum rule for the three point function of one pseudoscalar and two nucleon currents up to order four in the operator product expansion. The Borel transform is performed with respect to the nucleon momenta, whereas the momentum $q^2$ of the pseudoscalar vertex is kept fixed at spacelike values. The results can be well fitted using a monopole form with a cutoff mass of about $\Lambda_\pi \approx 800 \ {\mbox{MeV}}.
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"abstract": "QCD sum rules are used to calculate the $q^2$ dependence of the $\\pi NN$\ncoupling $g_{\\pi NN} (q^2)$ in the spacelike region $0.5 \\ {\\mbox{GeV}}^2\n\\lesssim q^2 \\lesssim 1.5\\ {\\mbox{GeV}}^2$. We study the Borel sum rule for the\nthree point function of one pseudoscalar and two nucleon currents up to order\nfour in the operator product expansion. The Borel transform is performed with\nrespect to the nucleon momenta, whereas the momentum $q^2$ of the pseudoscalar\nvertex is kept fixed at spacelike values. The results can be well fitted using\na monopole form with a cutoff mass of about $\\Lambda_\\pi \\approx 800 \\\n{\\mbox{MeV}}.",
"arxiv_id": "nucl-th/9506030",
"authors": [
"Thomas Meissner"
],
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"doi": "10.1103/PhysRevC.52.3386",
"journal_ref": "Phys.Rev.C52:3386-3392,1995",
"title": "The Pion-Nucleon Form Factor From QCD Sum Rules",
"url": "https://arxiv.org/abs/nucl-th/9506030"
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