dorsal/arxiv
View SchemaFlavor content of nucleon form factors
| Authors | R. Bijker, E. Santopinto |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0703053 |
| URL | https://arxiv.org/abs/nucl-th/0703053 |
| Journal | Rev. Mex. Fis. S 53 (6) 6-12 (2008) |
Abstract
The flavor content of nucleon form factors is analyzed using two different theoretical approaches. The first is based on a phenomenological two-component model in which the external photon couples to both an intrinsic three-quark structure and a meson cloud via vector-meson dominance. The flavor content of the nucleon form factors is extracted without introducing any additional parameter. A comparison with recent data from parity-violating electron scattering experiments shows a good overall agreement for the strange form factors. A more microscopic approach is that of an unquenched quark model proposed by Geiger and Isgur which is based on valence quark plus glue dominance to which quark-antiquark pairs are added in perturbation. In the original version the importance of $s \bar{s}$ loops in the proton was studied. Here we present the formalism for a new generation of unquenched quark models which, among other extensions, includes the contributions of $u \bar{u}$ and $d \bar{d}$ loops. Finally, we discuss some preliminary results in the closure limit.
{
"annotation_id": "5a45b2a0-5609-4f17-9c12-6ae2e37591a3",
"date_created": "2026-03-02T18:00:12.075000Z",
"date_modified": "2026-03-02T18:00:12.075000Z",
"file_hash": "0c934ece0498d4fa95a79edffb55857b7f16a8a9268d6ef9c18b21371ff1e282",
"private": false,
"record": {
"abstract": "The flavor content of nucleon form factors is analyzed using two different\ntheoretical approaches. The first is based on a phenomenological two-component\nmodel in which the external photon couples to both an intrinsic three-quark\nstructure and a meson cloud via vector-meson dominance. The flavor content of\nthe nucleon form factors is extracted without introducing any additional\nparameter. A comparison with recent data from parity-violating electron\nscattering experiments shows a good overall agreement for the strange form\nfactors.\n A more microscopic approach is that of an unquenched quark model proposed by\nGeiger and Isgur which is based on valence quark plus glue dominance to which\nquark-antiquark pairs are added in perturbation. In the original version the\nimportance of $s \\bar{s}$ loops in the proton was studied. Here we present the\nformalism for a new generation of unquenched quark models which, among other\nextensions, includes the contributions of $u \\bar{u}$ and $d \\bar{d}$ loops.\nFinally, we discuss some preliminary results in the closure limit.",
"arxiv_id": "nucl-th/0703053",
"authors": [
"R. Bijker",
"E. Santopinto"
],
"categories": [
"nucl-th",
"hep-ph"
],
"journal_ref": "Rev. Mex. Fis. S 53 (6) 6-12 (2008)",
"title": "Flavor content of nucleon form factors",
"url": "https://arxiv.org/abs/nucl-th/0703053"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "cfcbbd14-f721-469c-a095-b90de77a7995",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}