1. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland
2. AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
3. Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22603 Hamburg, Germany