[1] FCUL, IST, LIP, PT-1000 Lisbon, Portugal
[2] Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA
[3] Univ Instelling Antwerp, Dept Phys, B-2610 Wilrijk, Belgium
[4] VUB, ULB, IIHE, B-1050 Brussels, Belgium
[5] Univ Etat Mons, Fac Sci, B-7000 Mons, Belgium
[6] Univ Athens, Phys Lab, GR-10680 Athens, Greece
[7] Univ Bergen, Dept Phys, NL-5007 Bergen, Norway
[8] Univ Bologna, Dipartimento Fis, IT-40126 Bologna, Italy
[9] Ist Nazl Fis Nucl, IT-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 Estadual Rio de Janeiro, Inst Fis, Rio De Janeiro, Brazil
[13] Comenius Univ, Fac Math & Phys, SK-84215 Bratislava, Slovakia
[14] Coll France, Phys Corpusculaire Lab, IN2P3, CNRS, FR-75231 Paris 05, France
[15] CERN, CH-1211 Geneva 23, Switzerland
[16] ULP, CNRS, IN2P3, Inst Rech Subatom, FR-67037 Strasbourg, France
[17] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece
[18] Acad Sci Czech Republ, Inst Phys, FZU, Div High Energy Phys, CZ-18040 Prague 8, Czech Republic
[19] Univ Geneva, Dipartimento Fis, IT-16146 Geneva, Switzerland
[20] Ist Nazl Fis Nucl, IT-16146 Geneva, Switzerland
[21] Univ Grenoble 1, CNRS, IN2P3, Inst Nucl Sci, FR-38026 Grenoble, France
[22] Helsinki Inst Phys, FI-00014 Helsinki, Finland
[23] Joint Inst Nucl Res, RU-101000 Moscow, Russia
[24] Univ Karlsruhe, Inst Expt Kernphys, DE-76128 Karlsruhe, Germany
[25] Inst Nucl Phys, PL-30055 Krakow, Poland
[26] Univ Min & Met, PL-30055 Krakow, Poland
[27] Univ Paris Sud, Accelerateur Lineaire Lab, IN2P3, CNRS, FR-91405 Orsay, France
[28] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England
[29] Univ Paris 06, CNRS, IN2P3, LPNHE, FR-75252 Paris 05, France
[30] Univ Paris 07, FR-75252 Paris 05, France
[31] Univ Lund, Dept Phys, SE-22363 Lund, Sweden
[32] Univ Lyon 1, IN2P3, CNRS, IPNL, FR-69622 Villeurbanne, France
[33] Univ Aix Marseille 2, CPP, IN2P3, CNRS, FR-13288 Marseille 09, France
[34] Univ Milan, Dipartimento Fis, IT-20133 Milan, Italy
[35] INFN Milano, IT-20133 Milan, Italy
[36] Univ Milan, Biocca, Dipartimento Fis, IT-20126 Milan, Italy
[37] INFN Milano, IT-20126 Milan, Italy
[38] Charles Univ, MFF, IPNP, Areal MFF, CZ-18000 Prague 8, Czech Republic
[39] NIKHEF H, NL-1009 DB Amsterdam, Netherlands
[40] Natl Tech Univ Athens, Dept Phys, GR-15773 Zografos, Greece
[41] Univ Oslo, Dept Phys, NO-1000 Oslo 3, Norway
[42] Univ Oviedo, Dept Fis, ES-33007 Oviedo, Spain
[43] Univ Oxford, Dept Phys, Oxford OX1 3RH, England
[44] Univ Padua, Dipartimento Fis, IT-35131 Padua, Italy
[45] Ist Nazl Fis Nucl, IT-35131 Padua, Italy
[46] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
[47] Univ Rome 2, Dipartimento Fis, IT-00173 Rome, Italy
[48] Ist Nazl Fis Nucl, IT-00173 Rome, Italy
[49] Univ Roma 3, Dipartimento Fis, IT-00146 Rome, Italy
[50] Ist Nazl Fis Nucl, IT-00146 Rome, Italy