• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Precise Measurements of Neutrino Cross Sections on the water target with the Emulsion detector

Research Project

Project/Area Number 18H03701
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields
Research InstitutionKyoto University

Principal Investigator

NAKAYA Tsuyoshi  京都大学, 理学研究科, 教授 (50314175)

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, 准教授 (30378575)
早戸 良成  東京大学, 宇宙線研究所, 准教授 (60321535)
三角 尚治  日本大学, 生産工学部, 准教授 (80408947)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥44,460,000 (Direct Cost: ¥34,200,000、Indirect Cost: ¥10,260,000)
Fiscal Year 2020: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2019: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2018: ¥22,880,000 (Direct Cost: ¥17,600,000、Indirect Cost: ¥5,280,000)
Keywordsニュートリノ / 原子核 / 加速器 / 反応断面積 / 原子核乾板 / 素粒子実験
Outline of Final Research Achievements

We studied the neutrino-nucleus interactions with water in order to measure neutrino oscillations with higher precision. We used the neutrino beam at J-PARC, and measured neutrinos with the best spacial resolution by using a nuclear emulsion detector. We successfully detect a proton in the neutrino interaction with the lowest momentum threshold of 200 MeV/c, which no other experiment in the world has been able to reach. We also measured the charged-current neutrino cross sections with the world's best precision. Our data are found to be well reproduced by theoretical models of neutrino-nucleus interactions, and can be applied to improve the models.

Academic Significance and Societal Importance of the Research Achievements

ニュートリノは素粒子と宇宙の研究のおいて重要である。ビッグバンの後に、なぜ反物質が消滅し、物質からなる我々の宇宙が誕生したかという根源的な謎を解明する鍵に「粒子と反粒子の間の対称性(CP対称性)」がある。最近、T2K実験から、ニュートリノでCP対称性が破れている兆候が観測されており、この観測の感度向上が素粒子の研究分野で望まれている。本研究は、この探索感度の向上のために新しい実験を行い、ニュートリノと原子核(水)との反応を世界最高の精度で測定した。また、ニュートリノは不思議な素粒子として一般の国民も興味を持っており、その好奇心を刺激する結果と言える。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (53 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (12 results) Journal Article (11 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 11 results,  Open Access: 11 results) Presentation (25 results) (of which Int'l Joint Research: 14 results,  Invited: 9 results) Remarks (5 results)

  • [Int'l Joint Research] UC Irvine/Boston University/U. Rochster(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] IFJ PAN, Cracow/NCBJ, Warsaw/U. Silesia, Katowice(ポーランド)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] INFN, U.Bari/INFN,U.Napoli/INFN,U.Padova(イタリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] U. Geneva/CERN/ETH Zurich(スイス)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] IRFU, CEA Saclay/Ecole Polytechnique/LPNHE(フランス)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Stony Brook, University of New York/University of Rochester/Boston University(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] INFN, U.Bari/INFN,U.Napoli/INFN,U.Padova(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] NCBJ, Warsaw/U. Silesia, Katowice/IFJ PAN, Cracow(ポーランド)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] IRFU, CEA Saclay/Ecole Polytechnique/LPNHE(フランス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] U. Geneva/CERN/ETH Zurich(スイス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2019 Annual Research Report
  • [Journal Article] First measurement using a nuclear emulsion detector of the νμ charged-current cross section on iron around the 1 GeV energy region2021

    • Author(s)
      H. Oshima, T. Fukuda, Y. Hayato, S. Mikado, T. Nakaya, T. Nakadaira et al. (NINJA collaboration)
    • Journal Title

      PTEP (Prog Theor Exp Phys)

      Volume: 2021 Issue: 3

    • DOI

      10.1093/ptep/ptab027

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurements of \bar{\nu_\mu} and \bar{\nu_\mu} + \nu_\mu charged-current cross-sections without detected pions nor protons on water and hydrocarbon at mean antineutrino energy of 0.86GeV2021

    • Author(s)
      K.Abe, T.Ishida, Y.Oyama et al.
    • Journal Title

      Prog.Theor.Exp.Phys.

      Volume: 2021 Issue: 4 Pages: 1-28

    • DOI

      10.1093/ptep/ptab014

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] First measurement of anti-νμ and νμ charged-current inclusive interactions on water using a nuclear emulsion detector2020

    • Author(s)
      A. Hiramoto, T. Fukuda, Y. Hayato, S. Mikado, T. Nakaya, T. Nakadaira et al. (NINJA collaboration)
    • Journal Title

      Phys. Rev. D

      Volume: 102 Issue: 7 Pages: 072006-072006

    • DOI

      10.1103/physrevd.102.072006

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Long baseline neutrino oscillation experiments with accelerators in Japan: From K2K to T2K2020

    • Author(s)
      T. Nakaya and K. Nishikawa
    • Journal Title

      Eur. Phys. J.

      Volume: C80 Issue: 4 Pages: 344-344

    • DOI

      10.1140/epjc/s10052-020-7906-x

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K2020

    • Author(s)
      T. Nakaya, Y. Hayato, T. Nakadaira et al. (T2K collaboration)
    • Journal Title

      Phys. Rev. D

      Volume: 101 Issue: 11 Pages: 112004-112004

    • DOI

      10.1103/physrevd.101.112004

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Study of Charged-Current neutrino interactions on water with nuclear emulsion in the NINJA experiment2020

    • Author(s)
      A.Hiramoto et al. (NINJA collaboration)
    • Journal Title

      J.Phys.Conf.Ser.

      Volume: 1468 Issue: 1 Pages: 012121-012121

    • DOI

      10.1088/1742-6596/1468/1/012121

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Measurement of the charged-current electron (anti-)neutrino inclusive cross-sections at the T2K off-axis near detector ND2802020

    • Author(s)
      K.Abe, T.Ishida, Y.Oyama et al.
    • Journal Title

      J.High Energ. Phys.

      Volume: 10 Issue: 10 Pages: 114-114

    • DOI

      10.1007/jhep10(2020)114

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] First measurement of the charged current \bar{\nu_\mu} double differential cross section on a water target without pions in the final state2020

    • Author(s)
      K.Abe, T.Ishida, Y.Oyama et al.
    • Journal Title

      Phys.Rev.D

      Volume: 102 Issue: 1 Pages: 012007-012007

    • DOI

      10.1103/physrevd.102.012007

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of the muon neutrino charged-current cross sections on water, hydrocarbon and iron, and their ratios, with the T2K on-axis detectors2019

    • Author(s)
      K. Abe, T. Ishida, Y. Oyama et al.
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2019 Issue: 9 Pages: 1-30

    • DOI

      10.1093/ptep/ptz070

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of inclusive double-differential nu_mu charged-current cross section with improved acceptance in the T2K off-axis near detector2018

    • Author(s)
      K.Abe, T.Ishida, Y.Oyama et al
    • Journal Title

      Physical Review D

      Volume: 98 Issue: 1 Pages: 012004-012004

    • DOI

      10.1103/physrevd.98.012004

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Characterization of nuclear effects in muon-neutrino scattering on hydrocarbon with a measurement of final-state kinematics and correlations in charged-current pionless interactions at T2K2018

    • Author(s)
      K.Abe, T.Ishida, Y.Oyama et al
    • Journal Title

      Physical Review D

      Volume: 98 Issue: 3 Pages: 032003-032003

    • DOI

      10.1103/physrevd.98.032003

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Measurement of charged-current interactions on water using a nuclear emulsion detector in the NINJA experiment2021

    • Author(s)
      A. Hiramoto
    • Organizer
      New Directions in Neutrino-Nucleus Scattering (NDNN) NUSTEC Workshop
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NINJA実験物理ランにおけるミューオン飛跡再構成の性能評価2021

    • Author(s)
      小田川 高大
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] NINJA実験によるニュートリノ反応の多変量解析の展望2021

    • Author(s)
      平本 綾美
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] T2K-WAGASCI実験によるCH標的のパイ中間子を含まないニュートリノ荷電カレント反応散乱断面積の解析2021

    • Author(s)
      安留 健嗣
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] NINJA実験における1 GeV領域のニュートリノ-鉄荷電カレント反応の断面積測定2021

    • Author(s)
      大島 仁
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Neutrino Physics in Japan with a gigantic detector, Super-Kamiokande2020

    • Author(s)
      T. Nakaya
    • Organizer
      A joint theoretical & experimental webinar: CP violation in neutrino oscillations and leptogenesis
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Neutrino oscillations in long baseline experiments2020

    • Author(s)
      T. Nakaya
    • Organizer
      5th International Conference on Particle Physics and Astrophysics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Status of neutrino event reconstruction in the NINJA experiment2020

    • Author(s)
      T. Odagawa
    • Organizer
      The 3rd KMI school: Machine Learning in Particle and Astrophysics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] T2K-WAGASCI実験によるCH標的のニュートリノ反応の識別とミューオンの角度・運動量の再構成2020

    • Author(s)
      安留 健嗣
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] NINJA experiment: Neutrino Interaction research with Nuclear emulsion and J-PARC Accelerator2020

    • Author(s)
      T. Fukuda
    • Organizer
      Fermilab Neutrino Seminar
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NINJA実験物理ランにおける水標的ECC中のニュートリノ反応再構成2020

    • Author(s)
      鈴木 陽介
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] NINJA実験物理ランの原子核乾板における大角度飛跡の評価2020

    • Author(s)
      内木 茉柚子
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] NINJA 実験物理ランにおけるシンチレータトラッカーの運用と性能評価2020

    • Author(s)
      小田川 高大
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] The worldwide status and outlook: What's next: Asia2019

    • Author(s)
      T. Nakaya
    • Organizer
      The 27th edition of the International Workshop on Weak interactions and Neutrinos (WIN2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Prospects and status of the physics run of the NINJA experiment2019

    • Author(s)
      T. Odagawa
    • Organizer
      The 21st International Workshop on Neutrinos from Accelerators (NuFact 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] First physics run of the WAGASCI-BabyMIND detector with full setup2019

    • Author(s)
      K. Yasutome
    • Organizer
      The 21st International Workshop on Neutrinos from Accelerators (NuFact 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study of Charged-Current neutrino interactions on water with nuclear emulsion in the NINJA experiment2019

    • Author(s)
      A. Hiramoto
    • Organizer
      The 16th International Conference on Topics in Astroparticle and Underground Physics (TAUP 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nuclear emulsion detector for future neutrino research - NINJA and EMPHATIC -2019

    • Author(s)
      T. Fukuda
    • Organizer
      The 21st International Workshop on Neutrinos from Accelerators (NUFACT2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Cross section measurement with NINJA: Status and Prospects2019

    • Author(s)
      Y. Suzuki
    • Organizer
      Rencontres du Vietnam 2019: 3 Neutrinos and Beyond
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NINJA実験におけるニュートリノ-鉄 荷電カレント反応の研究2019

    • Author(s)
      大島 仁
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] NINJA実験物理ランに向けた水標的検出器の開発2019

    • Author(s)
      鈴木 陽介
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Search for Neutrino CP violation in accelerator neutrino experiments2018

    • Author(s)
      T. Nakaya
    • Organizer
      Discrete Symmetries in Particle, Nuclear and Atomic Physics and implications for our Universe
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NINJA Experiment: Neutrino Interaction research with Nuclear emulsion and J-PARC Accelerator2018

    • Author(s)
      T. Fukuda
    • Organizer
      NuInt2018: 12th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Neutrino event detection with nuclear emulsion in the NINJA experiment2018

    • Author(s)
      A. Hiramoto
    • Organizer
      The XXVIII International Conference on Neutrino Physics and Astrophysics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NEUT, QE-like in Generators (NEUT), 2p2h implementation in NEUT, Pion production and absorption in NEUT2018

    • Author(s)
      Y. Hayato
    • Organizer
      ECT workshop: Modeling neutrino-nucleus interactions
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 京大ニュートリノグループアクティビティ

    • URL

      https://www-he.scphys.kyoto-u.ac.jp/research/Neutrino/T2K/activity.html

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
  • [Remarks] T2K実験

    • URL

      https://t2k-experiment.org

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
  • [Remarks] NINJA実験

    • URL

      https://flab.phys.nagoya-u.ac.jp/ninja/

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
  • [Remarks] 京都ニュートリノT2Kグループ

    • URL

      https://www-he.scphys.kyoto-u.ac.jp/research/Neutrino/T2K/t2k.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] ニュートリノ反応精密測定実験 NINJA

    • URL

      https://flab.phys.nagoya-u.ac.jp/2011/experiment/ninja/

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi