dorsal/arxiv
View SchemaTheory of Eta Photo- and Electroproduction
| Authors | Nimai C. Mukhopadhyay, J. -F. Zhang, M. Benmerrouche |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9612061 |
| URL | https://arxiv.org/abs/nucl-th/9612061 |
Abstract
We analyze the available data on eta photo- and electroproduction, around W~1535 MeV, in the framework of the effective Lagrangian approach, and extract, in a nearly model-independent fashion, the electrostrong amplitude for the gamma+N--> N*(1535)--> N+eta processes. Quark model approaches are shown to be quite inadequate to explain this property at all Q^2. In particular, at high Q^2, the extracted amplitude falls much slower than the predictions of the quark model, as a function of Q^2, a situation similar to the electroexcitation and decay of Delta(1232). A QCD explanation of these observations is urgently needed.
{
"annotation_id": "0f1162d0-30a3-43af-b328-67ca9ef621f1",
"date_created": "2026-03-02T18:00:18.519000Z",
"date_modified": "2026-03-02T18:00:18.519000Z",
"file_hash": "0a764408f1ef5dcc41024295595d60cdebce523e8d62b8d447a1c7c22857123a",
"private": false,
"record": {
"abstract": "We analyze the available data on eta photo- and electroproduction, around\nW~1535 MeV, in the framework of the effective Lagrangian approach, and extract,\nin a nearly model-independent fashion, the electrostrong amplitude for the\ngamma+N--\u003e N*(1535)--\u003e N+eta processes. Quark model approaches are shown to be\nquite inadequate to explain this property at all Q^2. In particular, at high\nQ^2, the extracted amplitude falls much slower than the predictions of the\nquark model, as a function of Q^2, a situation similar to the electroexcitation\nand decay of Delta(1232). A QCD explanation of these observations is urgently\nneeded.",
"arxiv_id": "nucl-th/9612061",
"authors": [
"Nimai C. Mukhopadhyay",
"J. -F. Zhang",
"M. Benmerrouche"
],
"categories": [
"nucl-th",
"hep-ph"
],
"title": "Theory of Eta Photo- and Electroproduction",
"url": "https://arxiv.org/abs/nucl-th/9612061"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "3ad12d85-da44-43d9-bff9-582c22793aa5",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}