2012 Fiscal Year Final Research Report
Research and development of a detector for a double-beta decay search with very high sensitivity at KamLAND
| Project/Area Number |
21244025
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Tohoku University |
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Principal Investigator |
SHIRAI Junpei 東北大学, ニュートリノ科学研究センター, 准教授 (90171032)
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| Co-Investigator(Renkei-kenkyūsha) |
SUEKANE Fumihiko 東北大学, ニュートリノ科学研究センター, 准教授 (10196678)
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| Project Period (FY) |
2009 – 2012
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| Keywords | 素粒子実験 / ニュートリノ / カムランド / 2重ベータ崩壊 / 液体シンチレータ / キセノン |
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| Research Abstract |
The study made a research and development of a detector for neutrino-less double-beta decays of nuclei which would occur if the neutrino itself is the anti-neutrino of its own. Using the world's largest liquid scintillator detector KamLAND 136Xe-resolved liquid scintillator and a mini-balloon filled with the liquid was developed and installed at the center of the detector. The experiment provided the most stringent limit and strongly disfavored the discovery claim of a 76Ge experiment.
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