dorsal/arxiv
View SchemaLambda(1405) as a multiquark state
| Authors | Seungho Choe |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9712003 |
| URL | https://arxiv.org/abs/nucl-th/9712003 |
| DOI | 10.1007/s100500050148 |
| Journal | Eur.Phys.J. A3 (1998) 65-73 |
Abstract
In the QCD sum rule approach we predict the $\Lambda$ (1405) mass by choosing the $\pi^0\Sigma^0$ multiquark interpolating field. It is found that the mass is about 1.419 GeV from $\Pi_1 (q^2)$ sum rule which is more reliable than $\Pi_q (q^2)$ sum rule, where $\Pi_q (q^2)$ and $\Pi_1 (q^2)$ are two invariant functions of the correlator $\Pi (q^2)$. We also present the sum rules for the $K^+ p$ and the $\pi^+\Sigma^+$ multiquark states, and compare to those for the $\pi^0\Sigma^0$ multiquark state. The mass of the $\Lambda$ (1600) can be also reproduced in our approach.
{
"annotation_id": "389f7d74-3fe2-4eee-891d-5f7688f874e1",
"date_created": "2026-03-02T18:00:22.315000Z",
"date_modified": "2026-03-02T18:00:22.315000Z",
"file_hash": "f80c96be449a946a659ece788bff2bf91a02b3e9360bfdc8c4468812d7debb23",
"private": false,
"record": {
"abstract": "In the QCD sum rule approach we predict the $\\Lambda$ (1405) mass by choosing\nthe $\\pi^0\\Sigma^0$ multiquark interpolating field. It is found that the mass\nis about 1.419 GeV from $\\Pi_1 (q^2)$ sum rule which is more reliable than\n$\\Pi_q (q^2)$ sum rule, where $\\Pi_q (q^2)$ and $\\Pi_1 (q^2)$ are two invariant\nfunctions of the correlator $\\Pi (q^2)$. We also present the sum rules for the\n$K^+ p$ and the $\\pi^+\\Sigma^+$ multiquark states, and compare to those for the\n$\\pi^0\\Sigma^0$ multiquark state. The mass of the $\\Lambda$ (1600) can be also\nreproduced in our approach.",
"arxiv_id": "nucl-th/9712003",
"authors": [
"Seungho Choe"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1007/s100500050148",
"journal_ref": "Eur.Phys.J. A3 (1998) 65-73",
"title": "Lambda(1405) as a multiquark state",
"url": "https://arxiv.org/abs/nucl-th/9712003"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "ebc15dd3-31d2-4d01-872a-cfadc4d671f3",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}