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 a...

The energy dependence of a given process teaches us about the dynamics of this process. If the energy dependence can be described by a Reggetype approach a la Donnachie and Landshoff [1] we call the process soft. The total hadron-proton cross sections dependence on center-of-mass energy exemplifies the behaviour of soft processes.. If the energy dependence can be described by perturbative QCD (...

During the years 1994–97, the emulsion target of the CHORUS detector was exposed to the wide-band neutrino beam of the CERN SPS of 27 GeV average neutrino energy. In total about 100, 000 charged-current neutrino interactions with at least one identified muon were located in the nuclear emulsion target and fully reconstructed, using newly developed automatic scanning systems. Charmed particles w...