| Project/Area Number |
25000004
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| Research Category |
Grant-in-Aid for Specially Promoted Research
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
Mathematics and Physics
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| Research Institution | Osaka University |
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Principal Investigator |
KUNO Yoshitaka 大阪大学, 大学院理学研究科, 教授 (30170020)
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| Co-Investigator(Kenkyū-buntansha) |
TOJO Junji 九州大学, 理学研究院, 准教授 (70360592)
SATO Akira 大阪大学, 大学院理学研究科, 助教 (40362610)
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| Co-Investigator(Renkei-kenkyūsha) |
KAWAGOE Kiyomoto 九州大学, 理学研究院, 教授 (40183785)
UNO Shoji 高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (70183019)
OGITSU Toru 高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (30185524)
MIHARA Satoshi 高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (80292837)
YOSHIOKA Tamaki 九州大学, 理学研究院, 准教授 (20401317)
SASAKI Kenichi 高エネルギー加速器研究機構, 超伝導低温工学センター, 准教授 (70322831)
YOSHIDA Makoto 高エネルギー加速器研究機構, 超伝導低温工学センター, 講師 (70379303)
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| Project Period (FY) |
2013 – 2017
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥562,900,000 (Direct Cost: ¥433,000,000、Indirect Cost: ¥129,900,000)
Fiscal Year 2017: ¥20,930,000 (Direct Cost: ¥16,100,000、Indirect Cost: ¥4,830,000)
Fiscal Year 2016: ¥41,080,000 (Direct Cost: ¥31,600,000、Indirect Cost: ¥9,480,000)
Fiscal Year 2015: ¥140,010,000 (Direct Cost: ¥107,700,000、Indirect Cost: ¥32,310,000)
Fiscal Year 2014: ¥216,190,000 (Direct Cost: ¥166,300,000、Indirect Cost: ¥49,890,000)
Fiscal Year 2013: ¥144,690,000 (Direct Cost: ¥111,300,000、Indirect Cost: ¥33,390,000)
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| Keywords | ミューオン / 稀過程 / μ→e転換過程 / 荷電レプトンフレーバー / μ-e転換過程 / 円筒ドリフトチェンバー / COMET実験 / 円筒ドリフトチェンパー |
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| Outline of Final Research Achievements |
The proposed research project is to search for a process of charged lepton flavor violation (CLFV) of muon to electron(μ-e) conversion by the first phase of the J-PARC E21COMET experiment (COMET Phase-I), with an improved experimental sensitivity by more than hundredsover the previous experimental limit. It has been experimentally confirmed that quarks and neutrino are transformed one another. However, only CLFV has been yet to be observed, and a discovery of CLFV is considered to be one ofthe most important subjects, which potentially leadsa search to discover new physicsbeyond the Standard Model in particle physics.
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| Assessment Rating |
Verification Result (Rating)
A-
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Assessment Rating |
Result (Rating)
A-: Progress in the research is steadily towards the initial goal. However, further efforts are necessary as a part of the research progress is delayed.
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