Application of neutron signal for leptonic CP violation and mass hierarchy studies
| Project/Area Number |
16K05372
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 加速器ニュートリノ / 大気ニュートリノ / ニュートリノ振動 / ガドリニウム / 中性子検出 / 反ニュートリノ識別 / 素粒子実験 / 宇宙線 |
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| Outline of Final Research Achievements |
The feasibility of the separation performance between neutrino and anti-neutrino interactions in accelerator and atmospheric neutrino experiments was studied in this research project. SK-Gd, where anti-neutrino signal is improved by adding Gadolinium into pure water inside Super-Kamiokande detector, is planning. Based on the detailed simulation study, we found that the performance of water Cherenkov detector is not significantly affected by the addition of Gadolinium and the signal of anti-neutrino from Gadolinium reaction is possible to detect with high efficiency. We conclude that anti-neutrino separation performance will be improved in SK-Gd for accelerator and atmospheric neutrino measurements.
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| Academic Significance and Societal Importance of the Research Achievements |
ニュートリノにおけるCP対称性の破れは物質・反物質非対称性をもたらす源として、この宇宙がなぜ物質優勢なのかという謎を解く原因としてレプトジェネシス理論を中心に注目されている。
加速器および大気ニュートリノ測定において反ニュートリノ識別が可能になると、ニュートリノおよび反ニュートリノそれぞれでニュートリノ振動確率を独立に測定可能となり、CP対称性の破れの測定の向上し、ひいては、宇宙の謎の解明に貢献できると思われる。
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Report
(4 results)
Research Products
(12 results)
