Affiliation: | a Department of Physics, Tohoku University, Sendai 980-8578, Japan b Department of Physics, Osaka University, Toyokana 560, Japan c Institute for Particle and Nuclear Physics, KEK, Tsukuba 305-0801, Japan d Department of Physics, Seoul National University, Seoul 151-742, Korea e Laboratory of Nuclear Science, Tohoku University, Sendai 982-0826, Japan f Department of Physics, University of Tokyo, Tokyo 113, Japan g Department of Physics, Houston University, TX 77204, USA h Department of Physics, Hampton University, VA 23668, USA |