[1] Univ Paris 06, CNRS, IN2P3, LPNHE, F-75252 Paris 05, France
[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA
[3] Univ Instelling Antwerp, Dept Phys, B-2610 Antwerp, Belgium
[4] ULB VUB, IIHE, B-1050 Brussels, Belgium
[5] Univ Mons, Fac Sci, B-7000 Mons, Belgium
[6] Univ Athens, Dept Phys, GR-10680 Athens, Greece
[7] Univ Bergen, Dept Phys, N-5007 Bergen, Norway
[8] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy
[9] Ist Nazl Fis Nucl, I-40126 Bologna, Italy
[10] Ctr Brasileiro Pesquisas Fis, BR-22290 Rio De Janeiro, Brazil
[11] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22453 Rio De Janeiro, Brazil
[12] Univ Estado Rio De Janeiro, Inst Fis, Rio De Janeiro, Brazil
[13] Coll France, CNRS, IN2P3, Phys Corpusculaire Lab, F-75231 Paris 05, France
[14] CERN, CH-1211 Geneva 23, Switzerland
[15] Univ Strasbourg, CNRS, IN2P3, Inst Rech Subatom, F-67037 Strasbourg, France
[16] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece
[17] Acad Sci Czech Republ, Inst Phys, Div High Energy Phys, FZU, CZ-18040 Prague 8, Czech Republic
[18] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[19] Ist Nazl Fis Nucl, I-16146 Genoa, Italy
[20] Univ Grenoble 1, Inst Sci Nucl, CNRS, IN2P3, F-38026 St Martin Dheres, France
[21] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland
[22] Joint Inst Nucl Res, Head PO, Moscow 101000, Russia
[23] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[24] Inst Nucl Phys, PL-30055 Krakow, Poland
[25] Univ Min & Met Krakow, Fac Phys & Nucl Tech, PL-30055 Krakow, Poland
[26] Univ Paris 11, Lab Accelerateur Lineaire, IN2P3, CNRS, F-91405 Orsay, France
[27] Univ Lancaster, Sch Phys & Chem, Lancaster LA1 4YB, England
[28] Inst Super Tecn, FCUL, LIP, P-1000 Lisbon, Portugal
[29] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England
[30] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
[31] Univ Paris 07, F-75252 Paris 05, France
[32] Lund Univ, Dept Phys, S-22363 Lund, Sweden
[33] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France
[34] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[35] INFN MILANO, I-20133 Milan, Italy
[36] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy
[37] INFN MILANO, I-20126 Milan, Italy
[38] Charles Univ Prague, MFF, IPNP, Areal MFF, CR-18000 Prague 8, Czech Republic
[39] NIKHEF H, NL-1009 DB Amsterdam, Netherlands
[40] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece
[41] Univ Oslo, Dept Phys, N-0316 Oslo, Norway
[42] Univ Oviedo, Dept Fis, E-33007 Oviedo, Spain
[43] Univ Oxford, Dept Phys, Oxford OX1 3RH, England
[44] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy
[45] Ist Nazl Fis Nucl, I-35131 Padua, Italy
[46] Rutherford Appleton Lab, Didcot OX11 OQX, Oxon, England
[47] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy
[48] Ist Nazl Fis Nucl, I-00173 Rome, Italy
[49] Univ Roma 3, Dipartimento Fis, I-00146 Rome, Italy
[50] Ist Nazl Fis Nucl, I-00146 Rome, Italy