Within the Glauber formalism and a BUU transport model we analyze the η-photoproduction data from nuclei and evaluate the in-medium ηN cross section. Our results indicate that the ηN cross section is almost independent of the η energy up to 200 MeV.

We study the energy dependence of the cross sections for nucleon removal of 8B projectiles. It is shown that the Glauber model calculations with nucleonnucleon t-matrix reproduce well the energy dependence of the breakup cross sections of 8B. A DWBA model for the breakup cross section is also proposed and results are compared with those of the Glauber model. We show that to obtain an agreement ...

On behalf on the ZEUS Collaboration The energy dependence of exclusive vector meson (V) production is studied using the ZEUS data. The SU(4) universality of V cross sections in the Q 2 + M 2 V scale is tested. The energy dependence of the ratio of the cross sections for V production to the total γ * p cross section is compared with expectations based on pQCD and Regge approaches.

A study of the origin of structures in the energy dependence of electron bremsstrahlung is presented. There is a similarity between classical and quantum results. In the quantum case a connection between zeroes of dipole matrix elements and structures in the bremsstrahlung cross section and asymmetry parameter is established. In the classical case it is found that classical trapping, which resu...