Coulomb corrections in quasi-elastic scattering: tests of the effective-momentum approximation

Details Coulomb corrections in quasi-elastic scattering: tests of the effective-momentum approximation Coulomb corrections in quasi-elastic scattering: tests of the effective-momentum approximation

2008-08-14

arxiv.org/abs/0808.2029v1

Phys.Rev.C78:044604,2008

Physics

Nuclear Physics

Nuclear Theory

31 pages, 15 figures

Scientific paper

10.1103/PhysRevC.78.044604

Coulomb corrections for quasi-elastic scattering of electrons by nuclei are calculated using eikonal distorted waves. Corrections to the lowest-order eikonal approximation are included in order to obtain accurate results. Spin-dependent eikonal phase shifts are evaluated and they yield very small corrections to the longitudinal and transverse cross sections at electron energies of 500 MeV or higher. Because of this the Rosenbluth procedure is accurate for separation of the longitudinal and transverse response functions. The effective-momentum approximation is also found to be accurate with regard to removal of the remaining Coulomb effects from the distorted waves. Calculations are presented for electron scattering from Pb and Fe nuclei at energies of 500 MeV and 800 MeV and momentum transfers q = 550 MeV/c and 900 MeV/c.

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