Medium Eeects in Coherent Pion Photo-and Electroproduction on 4 He and 12 C Typeset Using Revt E X
نویسنده
چکیده
Coherent 0 photo-and electroproduction on 4 He and 12 C nuclei is investigated in the framework of a distorted wave impulse approximation in momentum space. The elementary process is described by the recently developed unitary isobar model. Medium eeects are considered by introducing a phe-nomenological self-energy. The recent experimental data for 4 He and 12 C can be well described over a wide range of energies and emission angles by the assumption that the-nuclear interaction saturates.
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