Affiliation: | (1) Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN), Saitama 351-0198, Japan;(2) Meson Science Laboratory, High Energy Accelerator Research Organization (KEK-MSL), Ibaraki 305-0801, Japan;(3) Meson Science Laboratory, Faculty of Science, University of Tokyo, Tokyo 113-8654, Japan;(4) Department of Radioisotopes, Japan Atomic Energy Research Institute (JAERI), Ibaraki 319-1195, Japan;(5) Quantum Radiation Division, Electrotechnical Laboratory (ETL), Ibaraki 305-8568, Japan;(6) Rutherford Appleton Laboratory (RAL), ISIS Muon Facility, Oxon, OX11 0QX, UK |