Unfactorized versus factorized calculations for ^2H(e,e'p) reactions at GeV energies

Details Unfactorized versus factorized calculations for ^2H(e,e'p) reactions at GeV energies Unfactorized versus factorized calculations for ^2H(e,e'p) reactions at GeV energies

2000-09-27

arxiv.org/abs/nucl-th/0009086v2

Phys.Rev.C63:034609,2001

Physics

Nuclear Physics

Nuclear Theory

13 pages, 2 figures; minor changes, kinematics in two panels of the figures changed, to appear in Physical Review C

Scientific paper

10.1103/PhysRevC.63.034609

In the literature, one often finds calculations of (e,e'p) reactions at GeV energies using the factorization approach. Factorization implies that the differential cross section can be written as the product of an off-shell electron-proton cross section and a distorted missing momentum distribution. While this factorization appears in the non-relativistic plane wave impulse approximation, it is broken in a more realistic approach. The main source of factorization breaking are final state interactions. In this paper, sources of factorization breaking are identified and their numerical relevance is examined in the reaction ^2H(e,e'p) for various kinematic settings in the GeV regime. The results imply that factorization should not be used for precision calculations, especially as unfactorized calculations are available.

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