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Medium Effects in Coherent Pion Photo- and Electroproduction on 4He and 12C

D. Drechsel·L. Tiator·S. S. Kamalov·Shin Nan Yang
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Abstract

Coherent pi0 photo- and electroproduction on 4He and 12C 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 effects are considered by introducing a phenomenological Delta self-energy. The recent experimental data for 4He and 12C can be well described over a wide range of energies and emission angles by the assumption that the Delta-nuclear interaction saturates.

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D. Drechsel, L. Tiator, S. S. Kamalov, Shin Nan Yang. 1999-06-08. Medium Effects in Coherent Pion Photo- and Electroproduction on 4He and 12C. https://doi.org/10.1016/s0375-9474(99)00412-1

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