1. Institute of Partile and Nuclear Studies, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
2. Center for Integrated Research in Fundamental Science and Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
3. Department of physics, University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan
4. Department of Physics, Kyoto University, Kitashirakawa Sakyo-ku, Kyoto 606-8502, Japan
5. Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
6. Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
7. RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
8. Institute for Innovative Science and Technology, Nagasaki Institute of Applied Science, 3-1 Shuku-machi, Nagasaki 851-0121, Japan
9. RIKEN Cluster for Pioneering Research, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
10. Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai, Ibaraki 319-1195, Japan
11. Department of Physics, Tohoku University, Sendai 980-8578, Japan
12. Institute of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
13. Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Koto, Sayo, Hyogo 679-5198, Japan
14. Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
15. Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
16. Brookhaven National Laboratory, Upton, NY 11973-5000, USA