dorsal/arxiv
View SchemaVector Meson Photoproduction with an Effective Lagrangian in the Quark Model II: $\omega$ Photoproduction
| Authors | Qiang Zhao, Zhenping Li, C. Bennhold |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9803021 |
| URL | https://arxiv.org/abs/nucl-th/9803021 |
Abstract
An investigation of $\gamma p\to \omega p$ is presented in a constituent quark model approach. The sparse data in the large $t$ region where the resonances dominate is well described within the model, while the diffractive behavior in the small $t$ region requires an additional t-channel exchange. Taking into account the t-channel $\pi^0$ exchange, we find a good overall agreement with the available data with only 3 free parameters. Our study shows that the differential cross section is not sensitive to s-channel resonances, however, the polarization observables are demonstrated to be very sensitive. Thus, measuring polarization observables is the crucial part of the vector meson photoproduction program in the search for "missing" resonances.
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"date_created": "2026-03-02T18:00:22.041000Z",
"date_modified": "2026-03-02T18:00:22.041000Z",
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"abstract": "An investigation of $\\gamma p\\to \\omega p$ is presented in a constituent\nquark model approach. The sparse data in the large $t$ region where the\nresonances dominate is well described within the model, while the diffractive\nbehavior in the small $t$ region requires an additional t-channel exchange.\nTaking into account the t-channel $\\pi^0$ exchange, we find a good overall\nagreement with the available data with only 3 free parameters. Our study shows\nthat the differential cross section is not sensitive to s-channel resonances,\nhowever, the polarization observables are demonstrated to be very sensitive.\nThus, measuring polarization observables is the crucial part of the vector\nmeson photoproduction program in the search for \"missing\" resonances.",
"arxiv_id": "nucl-th/9803021",
"authors": [
"Qiang Zhao",
"Zhenping Li",
"C. Bennhold"
],
"categories": [
"nucl-th"
],
"title": "Vector Meson Photoproduction with an Effective Lagrangian in the Quark Model II: $\\omega$ Photoproduction",
"url": "https://arxiv.org/abs/nucl-th/9803021"
},
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"type": "Model",
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