| Project/Area Number |
21244042
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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 | High Energy Accelerator Research Organization |
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Principal Investigator |
KOBAYASHI Takashi 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究, 教授 (70291317)
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| Co-Investigator(Renkei-kenkyūsha) |
HASEGAWA Takuya 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (40261549)
NAKADAIRA Takeshi 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (30378575)
SAKASHITA Ken 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (50435616)
MARUYAMA Takasumi 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (80375401)
SHIBATA Masahiro 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 博士研究員 (40391974)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥28,860,000 (Direct Cost: ¥22,200,000、Indirect Cost: ¥6,660,000)
Fiscal Year 2011: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2010: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2009: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
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| Keywords | ニュートリノ振動 / CP 対称性非保存 / ハドロン生成 / 水チェレンコフ検出器 / CP対称性非保存 |
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| Research Abstract |
We aim for improving the T2K sensitivity of electron neutrino appearance and proceeding towards future experiment for CP violation measurement. For these purpose, we performed a precise measurement of production cross section of the neutrino parent particles. Based on studies in this project, we reported the indication of electron neutrino appearance in 2011, and furthermore we reported the evidence with 3.2σsignificance in 2012. We also developed a new-type water Cherenkov detector in order to improve near-to-far extrapolation in T2k experiment. We have reported results of this project at international conferences, Physical Society of Japan meetings and journalarticles.
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