Ratios of Helicity Amplitudes for Exclusive \rho^{0} Electroproduction

Ratios of Helicity Amplitudes for Exclusive Electroproduction

The HERMES Collaboration
A. Airapetian
Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   N. Akopov Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   Z. Akopov Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   E.C. Aschenauer Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   111Now at: Brookhaven National Laboratory, Upton, New York 11772-5000, USA W. Augustyniak Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   R. Avakian Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   A. Avetissian Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   E. Avetisyan Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   S. Belostotski Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   N. Bianchi Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   H.P. Blok Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   A. Borissov Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   222Now at: Department of Physics and Astronomy 666 W.Hancock, Wayne State University, Detroit MI 48201, USA J. Bowles Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   V. Bryzgalov Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   J. Burns Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   M. Capiluppi Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   G.P. Capitani Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   E. Cisbani Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   G. Ciullo Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   M. Contalbrigo Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   P.F. Dalpiaz Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   W. Deconinck Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   R. De Leo Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   L. De Nardo Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   E. De Sanctis Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   M. Diefenthaler Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   P. Di Nezza Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   M. Düren Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   M. Ehrenfried Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   G. Elbakian Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   F. Ellinghaus Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   R. Fabbri Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   A. Fantoni Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   L. Felawka Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   S. Frullani Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   D. Gabbert Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   G. Gapienko Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   V. Gapienko Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   F. Garibaldi Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   G. Gavrilov Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   V. Gharibyan Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   F. Giordano Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   S. Gliske Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   M. Golembiovskaya Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   C. Hadjidakis Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   M. Hartig Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   D. Hasch Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   G. Hill Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   A. Hillenbrand Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy
TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
Department of Physics, Tokyo Institute of Technology, Tokyo 152, Japan
Department of Physics and Astronomy, VU University, 1081 HV Amsterdam, The Netherlands
Andrzej Soltan Institute for Nuclear Studies, 00-689 Warsaw, Poland
Yerevan Physics Institute, 375036 Yerevan, Armenia
   M. Hoek Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70124 Bari, Italy
School of Physics, Peking University, Beijing 100871, China
Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0390, USA
DESY, 22603 Hamburg, Germany
DESY, 15738 Zeuthen, Germany
Joint Institute for Nuclear Research, 141980 Dubna, Russia
Physikalisches Institut, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica, Università di Ferrara, 44100 Ferrara, Italy
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
Department of Subatomic and Radiation Physics, University of Gent, 9000 Gent, Belgium
Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
Department of Physics, University of Illinois, Urbana, Illinois 61801-3080, USA
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
Lebedev Physical Institute, 117924 Moscow, Russia
National Institute for Subatomic Physics (Nikhef), 1009 DB Amsterdam, The Netherlands
Petersburg Nuclear Physics Institute, Gatchina, 188300 Leningrad region, Russia
Institute for High Energy Physics, Protvino, 142281 Moscow region, Russia
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany
Istituto Nazionale di Fisica Nucleare, Sezione Roma 1, Gruppo Sanità and Physics Laboratory, Istituto Superiore di Sanità, 00161 Roma, Italy