2011 Fiscal Year Final Research Report
Study of neutrino flavor by the detection of Tau neutrino
| Project Area | New Developments of Flavor Physics |
|---|
| Project/Area Number |
18071004
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
|
| Allocation Type | Single-year Grants |
|---|
| Review Section |
Science and Engineering
|
|---|
| Research Institution | Nagoya University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NAKANO Toshiyuki 名古屋大学, 大学院・理学研究科, 助教 (50345849)
星野 香 名古屋大学, 大学院・理学研究科, 准教授 (70022738)
青木 茂樹 神戸大学, 大学院・人間発達環境学研究科, 教授 (80211689)
|
|---|
| Project Period (FY) |
2006 – 2011
|
| Keywords | ニュートリノ / タウニュートリノ / ニュートリノ振動 / 原子核乾板 |
|---|
| Research Abstract |
In this study, we pushed forward the OPERA experiment which intends to give a final conclusion to the existence of Neutrino Oscillation by detecting Tau neutrino appearance. Nuclear emulsion is the only one detector which can detect Tau neutrinos. In OPERA, about 9.3 Million nuclear emulsion films with the size of 10cm times 12.5cm were used to construct a neutrino detector of which mass is 1250 ton in Gran Sasso underground laboratory, Italy. Pure Muon neutrino beam was produced and injected to the direction of OPERA detector by a newly constructed neutrino beam line at CERN which is about 730km distant from Gran Sasso. In 2008, the exposure was started and until 2011 about 13000 neutrino interactions were accumulated in the detector. In parallel to the exposure, the extraction and the analysis of the Nuclear Emulsion target were continued. In 2011, we succeeded to detect the first Tau neutrino interaction.
|
