2012 Fiscal Year Final Research Report
Precision measurement of fundamental physical constants using exotic-atom spectroscopy
| Project/Area Number |
20002003
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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 | The University of Tokyo |
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Principal Investigator |
HAYANO Ryugo 東京大学, 大学院・理学系研究科, 教授 (30126148)
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| Project Period (FY) |
2008 – 2012
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| Keywords | 反陽子 / K 中間子 / レーザー分光 / X 線分光 / CERN / J-PARC / 基礎物理定数 |
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| Research Abstract |
Using the precision laser spectroscopy of antiprotonic helium (metastable atom made of a helium nucleus, an antiproton and an electron), the antiproton-to-electron mass ratio was determined to a fractional precision of 10^-9. This was used in the CODATA2010 adjustment of fundamental physical constants, thereby fulfilling the initial goal of this project.
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Research Products
(21 results)
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[Journal Article] Kaonic hydrogen X-ray measurement in SIDDHARTA2012
Author(s)
M. Bazzi, G. Beer, L. Bombelli, A.M. Bragadireanu, M. Cargnelli, G. Corradi, C. Curceanu, A. d'Uffizi, C. Fiorini, T. Frizzi, F. Ghio, C. Guaraldo, R.S. Hayano, 他 24 名
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Journal Title
Nucl. Phys
Volume: A881
Pages: 88-97
Peer Reviewed
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[Journal Article] First measurement of kaonic helium-3 X-rays2011
Author(s)
M. Bazzi, G. Beer, L. Bombelli, A.M. Bragadireanu, M. Cargnelli, G. Corradi, C. Curceanu, A. d'Uffizi, C. Fiorini, T. Frizzi, F. Ghio, B. Girolami, C. Guaraldo, R.S. Hayano, 他 2
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Journal Title
Physics Letters
Volume: B 697
Pages: 199-202
Peer Reviewed
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