[1] Univ Paris 06, CNRS, IN2P3, LPNHE, F-75252 Paris, France
[2] ULB VUB, IIHE, B-1050 Brussels, Belgium
[3] Univ Athens, Phys Lab, GR-10680 Athens, Greece
[4] Univ Bergen, Dept Phys, N-5007 Bergen, Norway
[5] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy
[6] Ist Nazl Fis Nucl, I-40126 Bologna, Italy
[7] Ctr Brasileiro Pesquisas Fis, BR-22290 Rio De Janeiro, Brazil
[8] Univ Estadual Janeiro, Inst Fis, Rio De Janeiro, Brazil
[9] Coll France, Phys Corpusculaire Lab, CNRS, IN2P3, F-75231 Paris, France
[10] CERN, CH-1211 Geneva 23, Switzerland
[11] ULP, CNRS, IN2P3, Inst Rech Subatomiques, F-67037 Strasbourg, France
[12] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece
[13] CAS, Inst Phys, FZU, High Energy Phys Div, Prague 18040 8, Czech Republic
[14] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[15] Ist Nazl Fis Nucl, I-16146 Genoa, Italy
[16] Univ Grenoble 1, Inst Sci Nucl, CNRS, IN2P3, F-38026 St Martin Dheres, France
[17] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland
[18] Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland
[19] Joint Inst Nucl Res, Moscow 101000, Russia
[20] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[21] PAN, Inst Nucl Phys, PL-31142 Krakow, Poland
[22] Univ Min & Met Krakow, Fac Phys & Nucl Tech, PL-30055 Krakow, Poland
[23] Univ Paris 11, Lab Accelerateur Lineaire, IN2P3, CNRS, F-91405 Orsay, France
[24] Univ Lancaster, Sch Phys & Chem, Lancaster LA1 4YB, England
[25] IST, FCUL, LIP, PL-1000 Lisbon, Portugal
[26] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England
[27] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
[28] Lund Univ, Dept Phys, S-22363 Lund, Sweden
[29] Univ Lyon 1, IPNL, IN2P3, CNRS, F-69622 Villeurbanne, France
[30] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[31] Ist Nazl Fis Nucl, MILANO, I-20133 Milan, Italy
[32] Ist Nazl Fis Nucl, MILANO, I-20126 Milan, Italy
[33] Univ Milano Biococca, Dipartimento Fis, I-20126 Milan, Italy
[34] Charles Univ Prague, IPNP, MFF, CR-18000 Prague 8, Czech Republic
[35] NIKHEF, NL-1009 DB Amsterdam, Netherlands
[36] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece
[37] Univ Oslo, Dept Phys, N-0316 Oslo, Norway
[38] Univ Oviedo, Dpto Fis, Oviedo 33007, Spain
[39] Univ Oxford, Dept Phys, Oxford OX1 3RH, England
[40] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy
[41] Ist Nazl Fis Nucl, I-35131 Padua, Italy
[42] Rutherford Appleton Lab, Didcot OX11 OQX, Oxon, England
[43] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy
[44] Ist Nazl Fis Nucl, I-00173 Rome, Italy
[45] Univ Roma 3, Dipartimento Fis, I-00146 Rome, Italy
[46] Ist Nazl Fis Nucl, I-00146 Rome, Italy
[47] CEA Saclay, DAPNIA, Serv Phys Particules, F-91191 Gif Sur Yvette, France
[48] CSIC UC, Inst Fis Cantabria, Santander 39006, Spain
[49] Inst High Energy Phys, Moscow, Russia
[50] Jozef Stefan Inst, Ljubljana 1000, Slovenia