Abstract
Electroproduction of the isobar in C and Fe has been studied for incident electrons with energies between 0.6 and 1.6 GeV. A longitudinal-transverse decomposition of the inclusive cross section has been made for . The residual longitudinal cross sections measured do not provide the additional strength needed above the quasifree region to satisfy the Coulomb sum rule. The transverse cross sections are in good agreement with data from photoabsorption.
- Received 31 March 1988
DOI:https://doi.org/10.1103/PhysRevLett.61.400
©1988 American Physical Society