Abstract
High-precision measurements at are reported, which allow the determination of quadrupole amplitudes in the transition; they simultaneously test the reliability of electroproduction models. The derived quadrupole-to-dipole ( ) amplitude ratios, and , are dominated by model error. Previous and results should be reconsidered after the model uncertainties associated with the method of their extraction are taken into account.
- Received 13 November 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.2963
©2001 American Physical Society