2013 Fiscal Year Final Research Report
Search for the electric dipole moment with laser cooled radioactive atom
| Project Area | Extreme quantum world opened up by atoms -towards establishing comprehensive picture of the universe based on particle physics- |
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| Project/Area Number |
21104005
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
SAKEMI YASUHIRO 東北大学, サイクロトロン・ラジオアイソトープセンター, 教授 (90251602)
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| Co-Investigator(Kenkyū-buntansha) |
ITOH Masatoshi 東北大学, サイクロトロン・ラジオアイソトープセンター, 助教 (30400435)
AOKI Takatoshi 東京大学, 総合文化研究科, 助教 (30328562)
HATANAKA Kichiji 大阪大学, 核物理研究センター, 教授 (50144530)
WAKASA Tomotsugu 九州大学, 大学院理学研究院, 准教授 (10311771)
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| Co-Investigator(Renkei-kenkyūsha) |
MURAKAMI Tetsuya 京都大学, 大学院理学研究科, 講師 (50219896)
IMAI Kenichi 独立行政法人日本原子力研究開発機構, 研究員 (70025493)
SHIMIZU Yasuhiro 東北大学, 大学院理学研究科, 助教 (80396423)
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| Project Period (FY) |
2009-07-23 – 2014-03-31
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| Keywords | 電気双極子能率 / 超対称性 / CP非保存 / 冷却原子 / フランシウム |
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| Research Abstract |
The search for the permanent electric dipole moment (EDM) of the electron gives the important information on the evolution mechanism of the matter dominant space. In this research program, the new experimental method to measure the EDM has been established with the laser cooled radioactive atoms.
The super symmetry model (SUSY), which is one of the most powerful theory beyond the standard model (SM), predicts the finite value of the electron EDM through the propagation of the SUSY particles, which are the partner particles of the SM particles. We selected the radioactive atoms Francium (Fr), which has the largest enhancement factor of the electron EDM, and the new experimental method to measure the Fr EDM has been established using online procedure to produce, cool and trap the Fr. The improvement of the measurement sensitivity was realized by the long coherence time using the laser cooled and trapped atoms.
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