Abstract
and cross sections have been measured in kinematics which emphasize direct knockout for and . The cross sections for both reactions peak strongly in the -resonance region. Theoretical calculations that account for the medium dependence of the propagator predict a similar photon energy dependence to the data and describe the general trends of the measured ratio. Both cross sections show strong angular dependence, and the large differences between the two channels indicate different microscopic reaction mechanisms.
- Received 3 September 1997
DOI:https://doi.org/10.1103/PhysRevLett.80.245
©1998 American Physical Society