dorsal/arxiv
View SchemaOrigin of Relativistic Effects in the Reaction D(e,e'p)n at GeV Energies
| Authors | S. Jeschonnek, J. W. Van Orden |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9911063 |
| URL | https://arxiv.org/abs/nucl-th/9911063 |
| DOI | 10.1103/PhysRevC.62.044613 |
| Journal | Phys.Rev.C62:044613,2000 |
Abstract
In a series of recent publications, a new approach to the non-relativistic reduction of the electromagnetic current operator in calculations of electro-nuclear reactions has been introduced. In one of these papers, the conjecture that at energies of a few GeV, the bulk of the relativistic effects comes from the current and not from the nuclear dynamics was made, based on the large relativistic effects in the transverse-longitudinal response. Here, we explicitly compare a fully relativistic, manifestly covariant calculation performed with the Gross equation, with a calculation that uses a non-relativistic wave function and a fully relativistic current operator. We find very good agreement up to missing momenta of 400 MeV/c, thus confirming the previous conjecture. We discuss slight deviations in cross sections for higher missing momenta and their possible origin, namely p-wave contributions and off-shell effects.
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"abstract": "In a series of recent publications, a new approach to the non-relativistic\nreduction of the electromagnetic current operator in calculations of\nelectro-nuclear reactions has been introduced. In one of these papers, the\nconjecture that at energies of a few GeV, the bulk of the relativistic effects\ncomes from the current and not from the nuclear dynamics was made, based on the\nlarge relativistic effects in the transverse-longitudinal response. Here, we\nexplicitly compare a fully relativistic, manifestly covariant calculation\nperformed with the Gross equation, with a calculation that uses a\nnon-relativistic wave function and a fully relativistic current operator. We\nfind very good agreement up to missing momenta of 400 MeV/c, thus confirming\nthe previous conjecture. We discuss slight deviations in cross sections for\nhigher missing momenta and their possible origin, namely p-wave contributions\nand off-shell effects.",
"arxiv_id": "nucl-th/9911063",
"authors": [
"S. Jeschonnek",
"J. W. Van Orden"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.62.044613",
"journal_ref": "Phys.Rev.C62:044613,2000",
"title": "Origin of Relativistic Effects in the Reaction D(e,e\u0027p)n at GeV Energies",
"url": "https://arxiv.org/abs/nucl-th/9911063"
},
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