| Project/Area Number |
15K05113
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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 | High Energy Accelerator Research Organization |
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Principal Investigator |
IGARASHI Youichi 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, 研究機関講師 (50311121)
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| Co-Investigator(Kenkyū-buntansha) |
清水 俊 大阪大学, 理学研究科, 助教 (60294146)
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| Research Collaborator |
IMAZATO Jun 高エネルギー加速器研究機構, 素粒子原子核研究所, 名誉教授
YAMAZAKI Hirohito 高エネルギー加速器研究機構, 放射線科学センター, 准教授 (40107686)
HORIE Keito 大阪大学, 理学研究科, 技術職員 (80432467)
ITO Hiroshi 神戸大学, 大学院理学研究科, 研究員 (60814720)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 素粒子(実験) / K 中間子 / ミュー粒子電子普遍性 / 素粒子実験 |
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| Outline of Final Research Achievements |
Electron and Muon have the same behavior without their mass on the standard model.This is known as Lepton Flavor Universality (LFU).
The experiment searches the new physics by a search of the violation of LFU using the charged Kaon decay.The ratio of the branching ratio of K→μν and K→eν was measured precisely using the J-PARC high intensity beam by the experiment.
This research calibrated the detectors and developed a calculation method of the energy and an algorithm of the particle identification. And also a detector Monte Carlo simulation program was developed to understand the detector system. From these, the research succeeded a counting of the target decay modes, a screening and an understanding of a background decay mode which is the structure dependent radiative decay.
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