Affiliation: | (1) Physics Department, University of Tokyo, 113-0033 Tokyo, Japan;(2) Department of Physics, Waseda University, 169-8555 Tokyo, Japan;(3) Tokuyama Women’s College, Tokuyama, 745-8511 Yamaguchi, Japan;(4) IMC, Hiroshima University, Higashi-Hiroshima, 739-8521 Hiroshima, Japan;(5) Brookhaven National Laboratory, RIKEN BNL Research Center, 11973 Upton, NY, USA;(6) Department of Physics, Duke University, Science Drive Durham, 27708-0305, NC, USA |