| Co-Investigator(Kenkyū-buntansha) |
福田 努 名古屋大学, 高等研究院(理), 特任助教 (10444390)
中平 武 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 (30378575)
小関 忠 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 施設長 (70225449)
清矢 良浩 大阪公立大学, 大学院理学研究科, 教授 (80251031)
木河 達也 京都大学, 理学研究科, 助教 (60823408)
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| Budget Amount *help |
¥188,890,000 (Direct Cost: ¥145,300,000、Indirect Cost: ¥43,590,000)
Fiscal Year 2022: ¥39,390,000 (Direct Cost: ¥30,300,000、Indirect Cost: ¥9,090,000)
Fiscal Year 2021: ¥38,480,000 (Direct Cost: ¥29,600,000、Indirect Cost: ¥8,880,000)
Fiscal Year 2020: ¥32,630,000 (Direct Cost: ¥25,100,000、Indirect Cost: ¥7,530,000)
Fiscal Year 2019: ¥33,670,000 (Direct Cost: ¥25,900,000、Indirect Cost: ¥7,770,000)
Fiscal Year 2018: ¥44,720,000 (Direct Cost: ¥34,400,000、Indirect Cost: ¥10,320,000)
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| Outline of Final Research Achievements |
Precise measurement of neutrino oscillation parameters and sensitive search for CP violation have been conducted in the long-baseline accelerator neutrino experiment T2K. To improve the performance of the T2K experiment, we have increased the intensity of the neutrino beam to accumulate large amounts of data, estimated the neutrino flux with high precision, accurate measurements of neutrino and nuclear interactions, and advanced neutrino oscillation analysis. Neutrino oscillations analysis was conducted by using 3.8×10^21 protons of neutrino beam data, and θ_23 was measured with an accuracy of ±5%, ranging from 0.46 to 0.491 or 0.526 to 0.578. For CP symmetry violation, the parameter δ_CP was constrained with a significance of 99.7%.
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