| Budget Amount *help |
¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
Total five tau neutrino events have been detected, allowing to reject the background-only hypothesis at 5.1 sigma through this research. This means that tau neutrino appearance has been discovered and the biggest goal of the OPERA experiment has been successfully achieved. Consequently, final verification for the neutrino oscillation has been completed. Then the accuracy for neutrino oscillation measurement in OPERA has been improved with new (looser) selection criteria for tau neutrino detection and reduction of the systematic error by a detailed study for the background. Furthermore, I proposed a new experimental project that aims at precise measurement of neutrino interactions with nuclear emulsion detector at J-PARC for next generation neutrino oscillation experiments. The NINJA Collaboration was newly established for this purpose with myself being a Principal Investigator (PI). We have implemented the neutrino beam exposure with water and iron target emulsion detector at J-PARC.
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