1Department of Physics and Astronomy, Technion—Israel Institute of Technology, Haifa 32000, Israel
2Département de Physique Nucléaire et Corpusculaire, University of Geneva, CH-1211 Geneva 4, Switzerland
3Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics, University of Bern, Sidlerstrasse 5, CH-012 Bern, Switzerland
4Department of Physics, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
5Kyushu University, Nishi-ku, 819-0395 Fukuoka, Japan
6Universität Bonn, Regina-Pacis-Weg 3, D-53113 Bonn, Germany
7CERN, CH-1211 Geneva 23, Switzerland
8Department of Physics and Astronomy, University of California, Irvine, CA, 92697-4575, USA
9University of Liverpool, Liverpool, L69 3BX, United Kingdom
10Department of Physics, Tsinghua University, Beijing, China
11INFN Sezione di Genova, Via Dodecaneso, 33, 16146 Genova, Italy
12Joint Institute for Nuclear research, Dubna, Russia
13Faculté de Physique et Ingénierie, University of Strasbourg, 3-5 rue de l’Université, Strasbourg, 67000, France
14University of Oregon, Eugene, OR 97403 USA