Origin of Relativistic Effects in the Reaction D(e,e'p)n at GeV Energies

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.

25 pages, 11 figures

References in corpus (5)

• Analysis of factorization in (e,e'p) reactions: A survey of the relativistic plane wave impulse approximation
• Relativistic Effects in the Electromagnetic Current at GeV Energies
• Inclusive quasielastic scattering of polarized electrons from polarized nuclei
• Spin Observables in Coincidence Electron Scattering from Nuclei I: Reduced Response Functions
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