Author affiliations
1 DAPNIA, Centre d'Études Nucléaires de Saclay, Gif-sur-Yvette,
France
2 European Organization for Nuclear Research (CERN), CH-1211 Genève 23,
Switzerland
3 Institute for Nuclear Research, Russian Academy of Sciences, Moscow,
Russia
4 Instituto de Física Nuclear y Altas Energías, Universidad de Zaragoza, Zaragoza,
Spain
5 Max-Planck-Institut für extraterrestrische Physik, Geissenbachstrasse, D-85748
Garching,
Germany
6 Enrico Fermi Institute and KICP, University of Chicago, Chicago, IL,
USA
7 Technische Universität Darmstadt, Institut für Kernphysik, Schlossgartenstrasse 9, D-64289
Darmstadt,
Germany
8 Aristotle University of Thessaloniki, Thessaloniki,
Greece
9 National Center for Scientific Research 'Demokritos', Athens,
Greece
10 Albert-Ludwigs-Universität Freiburg, Freiburg,
Germany
11 Department of Physics and Astronomy, University of British Columbia, Vancouver,
Canada
12 Gesellschaft für Schwerionenforschung, GSI-Darmstadt, Plasmaphysik, Planckstrasse 1,
D-64291 Darmstadt,
Germany
13 Johann Wolfgang Goethe-Universität, Institut für Angewandte Physik, Frankfurt am
Main,
Germany
14 Rudjer Bošković Institute, Bijenička cesta 54, PO Box 180, HR-10002 Zagreb,
Croatia
15 Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, D-80805
München,
Germany
16 University of Patras, Patras,
Greece
17 Particle Astrophysics Center—Fermi National Accelerator Laboratory, Batavia, IL
60510,
USA
18 Present address: Institut de Physique Nucléaire, Lyon,
France
19 Present address: Department of Physics, Queen's University, Kingston,
ON, K7L 3N6,
Canada
20 Present address: Scuola Normale Superiore, Pisa,
Italy
21 Permanent address: Brookhaven National Laboratory, NY,
USA
22 On leave
23 Deceased