Department of Nuclear Physics, Oxford University, Oxford, UK; University of Michigan, Ann Arbor, MI, USA, Physikalisches Institut der Universit??t Bonn, D-5300, Bonn, Federal Republic of Germany, Department of Nuclear Physics, Oxford University, Oxford, UK, I. Physikalisches Institut der RWTH Aachen, D-5100, Aachen, Federal Republic of Germany, II. Institut f??r Experimentalphysik der Universit??t Hamburg, D-2000, Hamburg, Federal Republic of Germany, Rutherford Laboratory, Chilton, UK, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany, Rutherford Laboratory, Chilton, UK; University of California, Berkeley, CA, USA, Weizmann Institute, Rehovot, Israel, Department of Physics, University of Wisconsin, Madison, Wisconsin, USA, Department of Physics, Imperial College London, London, UK, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; Cornell University, Ithaca, NY, USA, Physikalisches Institut der Universit??t Bonn, D-5300, Bonn, Federal Republic of Germany; SLAC, Stanford, CA, USA, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; ENAL, Batavia, IL, USA, Department of Physics, Imperial College London, London, UK; Johns Hopkins University, Baltimore, MD, USA, II. Institut f??r Experimentalphysik der Universit??t Hamburg, D-2000, Hamburg, Federal Republic of Germany; CERN, Geneva, Switzerland, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; Weizmann Institute, Rehovot, Israel, Ann Arbor, Lynch, H. L., Hilger, E., Rimkus, J., Foster, B., Revel, D., Kadansky, V., Lecomte, P., Leu, P., Schultz von Dratzig, A., Saxon, D. H., Pyrlik, J., Schliwa, M., Salmon, G. L., Chinowsky, W., Holder, M., L??ke, D., Riethm??ller, R., Bell, K. W., S??ding, P., Poelz, G., Ladage, A., Joos, P., Pevsner, A., Sedgbeer, J., Jones, W. G., Koch, W., Heyland, D., Wermes, N., Braunschweig, W., Wedemeyer, R., Brandelik, R., Dornan, P. J., Wolff, G., Schm??ser, P., Schmitz, D., Sander, H. G., Peise, G., Hart, J. C., Karshon, U., Boerner, H., Wallraff, W., Quarrie, D. R., Eisenberg, Y., Fohrmann, R., Woodworth, P. L., Fischer, H. M., Hillen, W., Ronat, E., Meyer, T., Hartmann, H., Knop, G., R??sch, R., Notz, D., Kowalski, H., Ringel, J., Binnie, D. M., Trines, D., Downie, N. A., Garbutt, D. A., L??hr, B., Wollstadt, M., K??tz, U., Hultschig, H., Cassel, D. G., Koehler, P., Pandoulas, D., Lloyd, S. L., Wu, Sau Lan, Yarker, S., Zobernig, G., Shapira, A., Wiik, B. H., Proudfoot, J., Martyn, H. -U., Gather, K., Cashmore, R. J., Barlow, R. J., Illingworth, J., Mikenberg, G., M??ttig, P., L??belsmeyer, K., Ogg, M., Roe, B. P., Freeman, J., Youngman, C., R??mer, O., Department of Nuclear Physics, Oxford University, Oxford, UK; University of Michigan, Ann Arbor, MI, USA, Physikalisches Institut der Universit??t Bonn, D-5300, Bonn, Federal Republic of Germany, Department of Nuclear Physics, Oxford University, Oxford, UK, I. Physikalisches Institut der RWTH Aachen, D-5100, Aachen, Federal Republic of Germany, II. Institut f??r Experimentalphysik der Universit??t Hamburg, D-2000, Hamburg, Federal Republic of Germany, Rutherford Laboratory, Chilton, UK, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany, Rutherford Laboratory, Chilton, UK; University of California, Berkeley, CA, USA, Weizmann Institute, Rehovot, Israel, Department of Physics, University of Wisconsin, Madison, Wisconsin, USA, Department of Physics, Imperial College London, London, UK, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; Cornell University, Ithaca, NY, USA, Physikalisches Institut der Universit??t Bonn, D-5300, Bonn, Federal Republic of Germany; SLAC, Stanford, CA, USA, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; ENAL, Batavia, IL, USA, Department of Physics, Imperial College London, London, UK; Johns Hopkins University, Baltimore, MD, USA, II. Institut f??r Experimentalphysik der Universit??t Hamburg, D-2000, Hamburg, Federal Republic of Germany; CERN, Geneva, Switzerland, Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany; Weizmann Institute, Rehovot, Israel, Ann Arbor, Lynch, H. L., Hilger, E., Rimkus, J., Foster, B., Revel, D., Kadansky, V., Lecomte, P., Leu, P., Schultz von Dratzig, A., Saxon, D. H., Pyrlik, J., Schliwa, M., Salmon, G. L., Chinowsky, W., Holder, M., L??ke, D., Riethm??ller, R., Bell, K. W., S??ding, P., Poelz, G., Ladage, A., Joos, P., Pevsner, A., Sedgbeer, J., Jones, W. G., Koch, W., Heyland, D., Wermes, N., Braunschweig, W., Wedemeyer, R., Brandelik, R., Dornan, P. J., Wolff, G., Schm??ser, P., Schmitz, D., Sander, H. G., Peise, G., Hart, J. C., Karshon, U., Boerner, H., Wallraff, W., Quarrie, D. R., Eisenberg, Y., Fohrmann, R., Woodworth, P. L., Fischer, H. M., Hillen, W., Ronat, E., Meyer, T., Hartmann, H., Knop, G., R??sch, R., Notz, D., Kowalski, H., Ringel, J., Binnie, D. M., Trines, D., Downie, N. A., Garbutt, D. A., L??hr, B., Wollstadt, M., K??tz, U., Hultschig, H., Cassel, D. G., Koehler, P., Pandoulas, D., Lloyd, S. L., Wu, Sau Lan, Yarker, S., Zobernig, G., Shapira, A., Wiik, B. H., Proudfoot, J., Martyn, H. -U., Gather, K., Cashmore, R. J., Barlow, R. J., Illingworth, J., Mikenberg, G., M??ttig, P., L??belsmeyer, K., Ogg, M., Roe, B. P., Freeman, J., Youngman, C., and R??mer, O.