dorsal/arxiv
View SchemaAbout QCD sum rules for pion-nucleon coupling
| Authors | Hungchong Kim |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9901029 |
| URL | https://arxiv.org/abs/nucl-th/9901029 |
Abstract
We point out subtleties in the previous sum rule calculations of the $\pi NN$ coupling associated with using either the PV or the PS coupling schemes in modeling the phenomenological side. We propose a sum rule which is independent of the coupling schemes used and has less uncertainty in the OPE. The obtained value is $g_{\pi N}=9.76 \pm 2.04$ where the uncertainty mainly comes from the quark-gluon mixed condensate.
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"date_created": "2026-03-02T18:00:25.758000Z",
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"abstract": "We point out subtleties in the previous sum rule calculations of the $\\pi NN$\ncoupling associated with using either the PV or the PS coupling schemes in\nmodeling the phenomenological side. We propose a sum rule which is independent\nof the coupling schemes used and has less uncertainty in the OPE. The obtained\nvalue is $g_{\\pi N}=9.76 \\pm 2.04$ where the uncertainty mainly comes from the\nquark-gluon mixed condensate.",
"arxiv_id": "nucl-th/9901029",
"authors": [
"Hungchong Kim"
],
"categories": [
"nucl-th"
],
"title": "About QCD sum rules for pion-nucleon coupling",
"url": "https://arxiv.org/abs/nucl-th/9901029"
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