[1] Petersburg Nucl Phys Inst, RU-188300 Gatchina, Russia
[2] Bogazici Univ, Dept Phys, Fac Sci, TR-80815 Bebek, Turkey
[3] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[4] CERN, CH-1211 Geneva 23, Switzerland
[5] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark
[6] AGH UST, FPACS, PL-30059 Krakow, Poland
[7] Polish Acad Sci, H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[8] Duke Univ, Dept Phys, Durham, NC 27708 USA
[9] Univ Geneva, Sect Phys, CH-1211 Geneva, Switzerland
[10] Univ Grenoble 1, INPG, Lab Phys Subatom & Cosmol, CNRS IN2P3, FR-38026 Grenoble, France
[11] Hampton Univ, Dept Phys, Hampton, VA 23668 USA
[12] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA
[13] Joint Inst Nucl Res Dubna, Joint Inst Nucl Res, RU-141980 Dubna, Moscow Region, Russia
[14] Lunds Univ, Fysiska Inst, SE-22100 Lund, Sweden
[15] INFN Milano, IT-20133 Milan, Italy
[16] Univ Milan, Dipartimento Fis, IT-20133 Milan, Italy
[17] Acad Sci, PN Lebedev Phys Inst, RU-117924 Moscow, Russia
[18] MEPhI, RU-115409 Moscow, Russia
[19] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, RU-11992 Moscow, Russia
[20] Max Planck Inst Phys & Astrophys, DE-80805 Munich, Germany
[21] Univ Paris 11, CNRS, LAL, IN2P3, F-91405 Orsay, France
[22] Univ Oslo, Dept Phys, NO-0316 Oslo 3, Norway
[23] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA
[24] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA
[25] UVEG CSIC, Ctr Mixto, Inst Fis Corpuscular, IFIC, ES-46071 Valencia, Spain
[26] Univ Valencia, Dept Fis At Mol & Nucl, Barcelona 08193, Spain
[27] CSIC, CNM, IMB, Barcelona 08193, Spain
[28] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada
[29] Yale Univ, Dept Phys, New Haven, CT 06520 USA