dorsal/arxiv
View SchemaLepton-Pair Production in Virtual Compton Scattering off the Proton
| Authors | A. Yu. Korchin, O. Scholten, F. de Jong |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9701042 |
| URL | https://arxiv.org/abs/nucl-th/9701042 |
| DOI | 10.1016/S0370-2693(97)00389-4 |
| Journal | Phys.Lett. B402 (1997) 1-6 |
Abstract
We show that lepton-pair production in Virtual Compton Scattering offers, through interference with the well-known Bethe-Heitler process, a sensitive probe to learn the longitudinal response of resonances and the electromagnetic nucleon form factors. This interference can be measured directly in terms of an asymmetry. The role of off-shell effects in the N-N-$\gamma$ vertices is investigated as well. An additional N-N-$\gamma -\gamma$ contact term in the amplitude, included to ensure gauge invariance of the model, cancels a substantial part of the off-shell effects.
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"abstract": "We show that lepton-pair production in Virtual Compton Scattering offers,\nthrough interference with the well-known Bethe-Heitler process, a sensitive\nprobe to learn the longitudinal response of resonances and the electromagnetic\nnucleon form factors. This interference can be measured directly in terms of an\nasymmetry. The role of off-shell effects in the N-N-$\\gamma$ vertices is\ninvestigated as well. An additional N-N-$\\gamma -\\gamma$ contact term in the\namplitude, included to ensure gauge invariance of the model, cancels a\nsubstantial part of the off-shell effects.",
"arxiv_id": "nucl-th/9701042",
"authors": [
"A. Yu. Korchin",
"O. Scholten",
"F. de Jong"
],
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"nucl-th"
],
"doi": "10.1016/S0370-2693(97)00389-4",
"journal_ref": "Phys.Lett. B402 (1997) 1-6",
"title": "Lepton-Pair Production in Virtual Compton Scattering off the Proton",
"url": "https://arxiv.org/abs/nucl-th/9701042"
},
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