[1] INFN Bologna, Bologna, Italy
[2] Univ Bonn, Phys Inst, Bonn, Germany
[3] Panjab Univ, Dept Phys, Chandigarh, India
[4] Univ Calabria, Phys Dept, Cosenza, Italy
[5] INFN, Cosenza, Italy
[6] Univ Malaya, Natl Ctr Particle Phys, Kuala Lumpur 50603, Malaysia
[7] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland
[8] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland
[9] Jagellonian Univ, Dept Phys, Krakow, Poland
[10] DESY, Hamburg, Germany
[11] Deutsch Elektronen Synchrotron DESY, Zeuthen, Germany
[12] Univ Glasgow, Sch Phys & Astron, Glasgow, Lanark, Scotland
[13] GSI Helmholtzzentrum Schwerionenforsch GmbH, Darmstadt, Germany
[14] Hamburg Univ, Inst Expt Phys, Hamburg, Germany
[15] Heidelberg Univ, Phys Inst, Heidelberg, Germany
[16] KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki, Japan
[17] Kobe Univ, Dept Phys, Kobe, Hyogo, Japan
[18] Natl Taras Shevchenko Univ Kyiv, Dept Nucl Phys, Kiev, Ukraine
[19] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia
[20] Max Planck Inst Phys & Astrophys, Munich, Germany
[21] Univ Oxford, Dept Phys, Oxford, England
[22] INFN Padova, Padua, Italy
[23] Dipartimento Fis & Astron, Padua, Italy
[24] INFN, Padua, Italy
[25] Tel Aviv Univ, Sch Phys, Raymond & Beverly Sackler Fac Exact Sci, Tel Aviv, Israel
[26] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA
[27] Tokyo Inst Technol, Dept Phys, Tokyo, Japan
[28] Univ Torino, Turin, Italy
[29] INFN, Turin, Italy
[30] Univ Piemonte Orientale, Novara, Italy
[31] UCL, Phys & Astron Dept, London, England
[32] Univ Warsaw, Fac Phys, Warsaw, Poland
[33] Natl Ctr Nucl Res, Warsaw, Poland
[34] Weizmann Inst Sci, Dept Particle Phys & Astrophys, Rehovot, Israel
[35] York Univ, Dept Phys, Toronto, ON M3J 1P3, Canada
[36] INFN Roma, Rome, Italy
[37] SPPU, Dept Technol, DST Inspire Fac, Pune, Maharashtra, India
[38] St Longowal Inst Engn & Technol, Longowal, Punjab, India
[39] Rockefeller Univ, New York, NY 10065 USA
[40] Univ Liverpool, Liverpool, Merseyside, England
[41] Univ Freiburg, Freiburg, Germany
[42] Xray Free Electron Laser Facil GmbH, Hamburg, Germany
[43] Hamburg Univ, Hamburg, Germany
[44] DESY, Hamburg, Germany
[45] Univ Oxford, Oxford, England
[46] Univ Bath, Bath, Avon, England
[47] Univ Lodz, Lodz, Poland