PHOTOPRODUCTION OFF NUCLEI AND POINT-LIKE PHOTON INTERACTIONS Part I: Cross Sections and Nuclear Shadowing
نویسنده
چکیده
High energy photoproduction off nuclear targets is studied within the Glauber-Gribov approximation. The photon is assumed to interact as a qq̄-system according to the Generalized Vector Dominance Model and as a “bare photon” in direct scattering processes with target nucleons. We calculate total cross sections for interactions of photons with nuclei taking into account coherence length effects and point-like interactions of the photon. Results are compared to data on photon-nucleus cross sections, nuclear shadowing, and quasi-elastic ρproduction. Extrapolations of cross sections and of the shadowing behaviour to high energies are given. Siegen SI 96-09 Santiago de Compostela US-FT/42-96 October, 1996
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