[1] IN2P3, CNRS, Phys Particules Lab, F-74019 Annecy Le Vieux, France
[2] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain
[3] Ist Nazl Fis Nucl, Sezione Bari, Dipartimento Fis, I-70126 Bari, Italy
[4] Acad Sinica, Inst High Energy Phys, Beijing, Peoples R China
[5] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland
[6] Univ Blaise Pascal, Phys Corpusculaire Lab, IN2P3, CNRS, F-63177 Clermont Ferrand, France
[7] Niels Bohr Inst, DK-2100 Copenhagen, Denmark
[8] Democritos Nucl Res Ctr, GR-15310 Athens, Greece
[9] Ecole Polytech, Lab Phys Nucl & Hautes Energies, F-91128 Palaiseau, France
[10] Univ Florence, Dipartimento Fis, Ist Nazl Fis Nucl, Sezione Fis, I-50125 Florence, Italy
[11] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA
[12] Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy
[13] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
[14] Heidelberg Univ, Inst Hochenergiephys, D-69120 Heidelberg, Germany
[15] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BZ, England
[16] Univ Innsbruck, Inst Phys Expt, A-6020 Innsbruck, Austria
[17] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England
[18] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany
[19] IN2P3, CNRS, Fac Sci Luminy, Ctr Phys Particules, F-13288 Marseille, France
[20] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[21] Ist Nazl Fis Nucl, Sezione Milano, I-20133 Milan, Italy
[22] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany
[23] Univ Paris Sud, Lab Accelerateur Lineaire, IN2P3, CNRS, F-91898 Orsay, France
[24] Univ Pisa, Dipartimento Fis, Sezione Pisa, I-56010 Pisa, Italy
[25] Scuola Normale Super Pisa, I-56010 Pisa, Italy
[26] Univ London, Royal Holloway & Bedford New Coll, Dept Phys, Surrey TW20 0EX, England
[27] Rutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon, England
[28] CEA, DAPNIA, Serv Phys Particules, CE Saclay, F-91191 Gif Sur Yvette, France
[29] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA
[30] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England
[31] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany
[32] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy
[33] Ist Nazl Fis Nucl, Sezione Trieste, I-34127 Trieste, Italy
[34] Univ Washington, Seattle, WA 98195 USA
[35] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[36] Univ Barcelona, Barcelona 08208, Spain
[37] Ist Nazl Fis Nucl, Ctr Siciliano Fis Nucl & Struttura Mat, Sezione Catania, I-95129 Catania, Italy
[38] CERN, CH-1211 Geneva 23, Switzerland
[39] Univ Turin, Ist Fis Gen, I-10125 Turin, Italy
[40] CNR, Ist Cosmo Geofis, I-10126 Turin, Italy