[1] Inst Phys Nucl, PL-3055 Krakow, Poland
[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA
[3] BESSY, D-12489 Berlin, Germany
[4] Branch Inst Nucl Phys, Protvino 142284, Moscow Region, Russia
[5] CEA Saclay, F-91191 Gif Sur Yvette, France
[6] Darmstadt Univ Technol, FB18, Fachgebiet TEMF, D-64289 Darmstadt, Germany
[7] DESY, D-22603 Hamburg, Germany
[8] DESY, D-15738 Zeuthen, Germany
[9] Stanislaw Staszic Univ Min & Met, Fac Phys & Nucl Techniques, PL-30059 Krakow, Poland
[10] Fermi Natl Accelerator Lab, Batavia, IL 60510 USA
[11] Univ Hamburg, Inst Phys Expt, D-20603 Hamburg, Germany
[12] Inst High Energy Phys, FEL Lab, Beijing 100080, Peoples R China
[13] Inst High Energy Phys, Protvino 142284, Moscow Region, Russia
[14] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[15] INFN Milano, LASA, I-20090 Segrate, MI, Italy
[16] Univ Rome 2, Ist Nazl Fis Nucl, I-00100 Rome, Italy
[17] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
[18] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
[19] IN2P3, CNRS, Inst Phys Nucl, F-91406 Orsay, France
[20] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[21] Univ Paris Sud, Lab Accelerateur Lineaire, IN2P3, CNRS, F-91898 Orsay, France
[22] Max Born Inst, D-12489 Berlin, Germany
[23] Cornell Univ, Newman Lab, Ithaca, NY 14850 USA
[24] Rhein Westfal TH Aachen, Phys Zentrum, Phys Inst 3A, D-52056 Aachen, Germany
[25] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[26] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
[27] Yerevan Phys Inst, Yerevan 375036, Armenia