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Study of Neutrino by OPERA experiment -Summary and study on cosmic-ray event-

Research Project

Project/Area Number 15H02085
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionNagoya University

Principal Investigator

NAKAMURA Mitsuhiro  名古屋大学, 未来材料・システム研究所, 教授 (90183889)

Co-Investigator(Kenkyū-buntansha) 佐藤 修  名古屋大学, 未来材料・システム研究所, 助教 (20377964)
中野 敏行  名古屋大学, 理学研究科, 講師 (50345849)
小松 雅宏  名古屋大学, 教養教育院, 准教授 (80345842)
Co-Investigator(Renkei-kenkyūsha) AOKI Shigeki  神戸大学, 大学院・人間発達環境学研究科, 教授 (80211689)
SHBUYA Hiroshi  東邦大学, 理学部, 教授 (40170922)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥31,720,000 (Direct Cost: ¥24,400,000、Indirect Cost: ¥7,320,000)
Fiscal Year 2017: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2016: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2015: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
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
Outline of Final Research Achievements

OPERA is an experiment to confirm the existence of neutrino oscillation, i.e. existence of neutrino mass, by detecting tau neutrino appearance. From 2000, we started the detector and beam line construction, did beam exposure from 2006 to 2012, have been performing event analysis until today. In 2015, we detected the fifth event and reached to the statistical significance of 5.1σlevel meaning the discovery level. From 2016, by applying looser cut and including the boarder events, the signal number reaches to 10 events with the expected background of 2.0±0.4. The reached significance level is 6.1σ. OPERA has finished the main analysis by this paper although continuing technological R&D using real events for electron neutrino detection and so on for future neutrino experiments.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (35 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (18 results) Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (10 results) (of which Int'l Joint Research: 4 results) Remarks (2 results)

  • [Int'l Joint Research] グランサッソー地下研究所/ナポリ大学/パドバ大学(イタリア)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] LAPP/IPHC(フランス)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] ベルン大学(スイス)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] IIHE(ベルギー)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] METU(トルコ)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] グランサッソー研究所/ナポリ大学/バリ大学(イタリア)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] ベルン大学(スイス)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] LAPP/IPHC(フランス)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] INR/ITEP/LPI(ロシア連邦)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] METU(トルコ)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] グランサッソー研究所/ナポリ大学/バリ大学(イタリア)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] ベルン大学(スイス)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] INR(フランス)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] INR/ITEP/LPI(ロシア連邦)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] METU(トルコ)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2015 Annual Research Report
  • [Journal Article] More results from the OPERA experiment2018

    • Author(s)
      G. Galati et al. (OPERA Collaboration )
    • Journal Title

      Nuovo Cim. C

      Volume: C40 Pages: 160-160

    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Study of charged hadron multiplicities in charged-current neutrino?lead interactions in the OPERA detector2018

    • Author(s)
      Agafonova N. et al.(OPERA Collaboration )
    • Journal Title

      The European Physical Journal C

      Volume: 78 Issue: 1 Pages: 62-62

    • DOI

      10.1140/epjc/s10052-017-5509-y

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Search for sterile neutrino mixing in the νμ→ντ appearance channel with the OPERA detector2016

    • Author(s)
      OPERA Collaboration (N. Mauri for the collaboration)
    • Journal Title

      EPJ Web Conf. 126 (2016) 04031

      Volume: 126 Pages: 04031-04031

    • DOI

      10.1051/epjconf/201612604031

    • Related Report
      2016 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Discovery of ντ appearance and recent results from OPERA2016

    • Author(s)
      OPERA Collaboration (T. Fukuda for the collaboration)
    • Journal Title

      Nuovo Cim. C

      Volume: C39 Pages: 315-315

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Discovery of τ Neutrino Appearance in the CNGS Neutrino Beam with the OPERA Experiment2015

    • Author(s)
      T. Shiraishi, et al.
    • Journal Title

      Phys. Rev. Lett.

      Volume: 115 Issue: 12 Pages: 121802-121802

    • DOI

      10.1103/physrevlett.115.121802

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ニュートリノ振動実験OPERAの最新結果2017

    • Author(s)
      佐藤修
    • Organizer
      日本物理学会春季大会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] 原子核乾板によるニュートリノ研究の展望2017

    • Author(s)
      福田 努
    • Organizer
      画像関連学会連合会秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] OPERA実験における飛跡読取装置HTSを用いたニュートリノ振動解析2016

    • Author(s)
      早川友博
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      宮崎大学 木花キャンパス
    • Year and Date
      2016-09-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] ニュートリノ振動実験OPERAにおける飛跡読取装置HTSを用いた検出効率評価およびΔm232測定2016

    • Author(s)
      早川友博
    • Organizer
      日本物理学会年次大会
    • Place of Presentation
      東北学院大学、仙台
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Result of OPERA Experiment2015

    • Author(s)
      N. Kitagawa
    • Organizer
      ISETS15
    • Place of Presentation
      Nagoya, Japan
    • Year and Date
      2015-11-27
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Δm223 Measurement in OPERA2015

    • Author(s)
      T. Hayakawa
    • Organizer
      ISETS15
    • Place of Presentation
      Nagoya, Japan
    • Year and Date
      2015-11-27
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ニュートリノ振動実験OPERAの現状報告2015

    • Author(s)
      佐藤修
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2015-09-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] ニュートリノ振動実験OPERAにおける崩壊事象探索2015

    • Author(s)
      石黒勝己
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2015-09-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] Results from the OPERA experiment at the CNGS beam2015

    • Author(s)
      早川友博
    • Organizer
      Meeting of the Division of Particle and Fields of the American Physical Society
    • Place of Presentation
      University of Michigan, USA
    • Year and Date
      2015-08-04
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Results from the OPERA experiment at the CNGS beam2015

    • Author(s)
      石黒勝己
    • Organizer
      5th Workshop on Flavour Symmetries and Consequences at Colliders (FLASY 2015)
    • Place of Presentation
      Manzanillo, Colima, Mexico
    • Year and Date
      2015-06-29
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 名古屋大学 F研究室 ホームページ

    • URL

      http://flab.phys.nagoya-u.ac.jp/2011/

    • Related Report
      2017 Annual Research Report
  • [Remarks] 名古屋大学F研究室ホームページ

    • URL

      http://flab.phys.nagoya-u.ac.jp/2011/

    • Related Report
      2016 Annual Research Report 2015 Annual Research Report

URL: 

Published: 2015-04-16   Modified: 2022-08-31  

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