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First Precision Spectroscopy of Pionic Atoms at RI Beam Factory |
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| Authors: | Kenta Itahashi Georg P A Berg Hiroyuki Fujioka Hans Geissel Ryugo S Hayano Satoru Hirenzaki Natsumi Ikeno Naohito Inabe Satoshi Itoh Daisuke Kameda Toshiyuki Kubo Hiroaki Matsubara Shinichiro Michimasa Kenjiro Miki Hiroyuki Miya Masaki Nakamura Takahiro Nishi Shumpei Noji Shinsuke Ota Ken Suzuki Hiroyuki Takeda Koichi Todoroki Kyo Tsukada Tomohiro Uesaka Helmut Weick Koichi Yoshida |
| Institution: | 1. RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan 2. JINA and Department of Physics, University of Notre Dame, Notre Dame, IN, 46556, USA 3. Division of Physics and Astronomy, Kyoto University, Kyoto, 606-8502, Japan 4. GSI-Helmholtzzentrum für Schwerionenforschung GmbH, 64291, Darmstadt, Germany 5. Department of Physics, University of Tokyo, Tokyo, 113-0033, Japan 6. Department of Physics, Nara Women’s University, Nara, 630-8506, Japan 7. Center for Nuclear Study, University of Tokyo, Saitama, 351-0198, Japan 8. RCNP, Osaka University, Osaka, 567-0047, Japan 9. Stefan-Meyer-Institut für subatomare Physik, Austrian Academy of Sciences, Vienna, Austria 10. Department of Physics, Tohoku University, 980-8578, Sendai, Miyagi, Japan |
| Abstract: | We conducted an inclusive missing-mass spectroscopy of 122Sn (d, 3He) reaction near the π¯ emission threshold at an incident energy of T d = 250 MeV/nucleon. The experiment sets its goals to the research and development of the high precision spectroscopy of pionic atoms at the RI beam factory (RIBF) of RIKEN, which precedes a new project, pionic atom factory project (piAF), to observe pionic atoms systematically. Here, we report the preliminary results of the pilot experiment. |
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