dorsal/arxiv
View SchemaCalculation of two-photon exchange effects for $\Delta$ production in electron-proton collisions
| Authors | S. Kondratyuk, P. G. Blunden |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0601063 |
| URL | https://arxiv.org/abs/nucl-th/0601063 |
| DOI | 10.1016/j.nuclphysa.2006.07.038 |
| Journal | Nucl.Phys.A778:44-52,2006 |
Abstract
We present an evaluation of a two-photon exchange correction to the cross section for unpolarized $\Delta$ isobar production in electron-proton collisions, using a relativistic, crossing symmetric and gauge invariant approach. The calculated box and crossed-box diagrams include nucleon and $\Delta$ intermediate states. We find a relation between the angular nonlinearity of the two-photon exchange contribution and the value of the $\gamma \Delta \Delta$ coupling constant.
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"abstract": "We present an evaluation of a two-photon exchange correction to the cross\nsection for unpolarized $\\Delta$ isobar production in electron-proton\ncollisions, using a relativistic, crossing symmetric and gauge invariant\napproach. The calculated box and crossed-box diagrams include nucleon and\n$\\Delta$ intermediate states. We find a relation between the angular\nnonlinearity of the two-photon exchange contribution and the value of the\n$\\gamma \\Delta \\Delta$ coupling constant.",
"arxiv_id": "nucl-th/0601063",
"authors": [
"S. Kondratyuk",
"P. G. Blunden"
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"doi": "10.1016/j.nuclphysa.2006.07.038",
"journal_ref": "Nucl.Phys.A778:44-52,2006",
"title": "Calculation of two-photon exchange effects for $\\Delta$ production in electron-proton collisions",
"url": "https://arxiv.org/abs/nucl-th/0601063"
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