dorsal/arxiv
View SchemaQCD sum rule calculation of the $\pi NN$ coupling-revisited
| Authors | Hungchong Kim, Su Houng Lee, Makoto Oka |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9809004 |
| URL | https://arxiv.org/abs/nucl-th/9809004 |
| DOI | 10.1016/S0370-2693(99)00379-2 |
| Journal | Phys.Lett. B453 (1999) 199-205 |
Abstract
In the conventional QCD sum rule calculation for the $\pi NN$ coupling beyond the soft-pion limit, there are three distinct Dirac structures, each of which can be used to construct separate sum rule. We point out subtleties in the previous sum rule results, based on one of the Dirac structure, associated with using either the PV or the PS coupling schemes in modeling the phenomenological side. We propose a sum rule coming from a different Dirac structure, 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.
{
"annotation_id": "4e657673-0681-4aaa-9110-6a73bd3c754f",
"date_created": "2026-03-02T18:00:22.420000Z",
"date_modified": "2026-03-02T18:00:22.420000Z",
"file_hash": "3e4c40f9df4e30bd866e43b0ea168bd57867fae65c36239a44c6eea8c238b053",
"private": false,
"record": {
"abstract": "In the conventional QCD sum rule calculation for the $\\pi NN$ coupling beyond\nthe soft-pion limit, there are three distinct Dirac structures, each of which\ncan be used to construct separate sum rule. We point out subtleties in the\nprevious sum rule results, based on one of the Dirac structure, associated with\nusing either the PV or the PS coupling schemes in modeling the phenomenological\nside. We propose a sum rule coming from a different Dirac structure, which is\nindependent of the coupling schemes used and has less uncertainty in the OPE.\nThe obtained value is $g_{\\pi N}=9.76 \\pm 2.04$ where the uncertainty mainly\ncomes from the quark-gluon mixed condensate.",
"arxiv_id": "nucl-th/9809004",
"authors": [
"Hungchong Kim",
"Su Houng Lee",
"Makoto Oka"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/S0370-2693(99)00379-2",
"journal_ref": "Phys.Lett. B453 (1999) 199-205",
"title": "QCD sum rule calculation of the $\\pi NN$ coupling-revisited",
"url": "https://arxiv.org/abs/nucl-th/9809004"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "4a1fdbd9-0b84-47fb-99ed-6ec87f7848f1",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}