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Study of tau neutrinos by using compact emulsion spectrometer technique

Research Project

Project/Area Number 18K03680
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionToho University

Principal Investigator

SHIBUYA Hiroshi  東邦大学, 理学部, 名誉教授 (40170922)

Co-Investigator(Kenkyū-buntansha) 小川 了  東邦大学, 理学部, 教授 (10256761)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsコンパクト・エマルション・スペクトロメーター / タウニュートリノ / 原子核乾板 / 磁場 / エマルション・スペクトロメーター
Outline of Final Research Achievements

To study tau neutrinos with particle-antiparticle separation, we investigated problems on the realization of the compact emulsion spectrometer technique and how to solve the problems. We examined the whole chain of the CES technique: production of nuclear emulsion plates suitable to the CES, assembly of the CES chamber, the exposure to either accelerator beams or cosmic rays, the measurement of particle tracks recorded in the CES, analysis of their electric charge separation. As a result, we found the width of the sagitta distribution, which determines the performance of the CES technique, well reproduced by a Monte Carlo simulation with position measurement errors of charged particle tracks and their multiple scattering in the CES materials. The CES technique has reached the stage of practical use.

Academic Significance and Societal Importance of the Research Achievements

標準理論を越えた新物理の手がかりを探索するには、まだよくわかっていない粒子を詳しく調べるのがよい。タウニュートリノは標準理論の構成粒子の中で最後に見つかった第3世代の粒子で、さらに、パートナーのタウレプトンを含む崩壊には標準理論からのずれの可能性が示唆されている。そのタウニュートリノを詳細に研究するためには、粒子・反粒子を分離する必要があり、そのためのカギとなる技術、コンパクト・エマルション・スペクトロメーターの実用化に向けた研究を行い、その基礎技術を確立した。

Report

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

    (31 results)

All 2021 2020 2019 2018 Other

All Journal Article (13 results) (of which Int'l Joint Research: 13 results,  Peer Reviewed: 13 results,  Open Access: 13 results) Presentation (16 results) (of which Int'l Joint Research: 3 results) Remarks (2 results)

  • [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] Sensitivity of the SHiP experiment to light dark matter2021

    • Author(s)
      C. Ahdida, M. Komatsu, S. Mikada, S. Ogawa, H. Shibuya et al.,
    • Journal Title

      Journal of High Energy Physics

      Volume: 04 Issue: 4 Pages: 1991-28

    • DOI

      10.1007/jhep04(2021)199

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] First observation of a tau neutrino charged current interaction with charm production in the OPERA experiment2020

    • Author(s)
      N. Agafonova, T. Fukuda, T. Matsuo, S. Mikado, S. Ogawa, H. Shibuya et al. (OPERA Collaboration)
    • Journal Title

      The European Physical Journal C

      Volume: 80 Issue: 8 Pages: 6991-10

    • DOI

      10.1140/epjc/s10052-020-8160-y

    • 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] The magnet of the scattering and neutrino detector for the SHiP experiment at CERN2020

    • Author(s)
      C. Ahdida, S. Ogawa, H. Shibuya et al. (SHiP Collaboration)
    • Journal Title

      Journal of Instrumentation

      Volume: 15 Issue: 01 Pages: P01027-P01027

    • DOI

      10.1088/1748-0221/15/01/p01027

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of the muon flux from 400 GeV/c protons interacting in a thick molybdenum/tungsten target2020

    • Author(s)
      C. Ahdida, S. Ogawa, H. Shibuya et al. (SHiP Collaboration)
    • Journal Title

      The European Physical Journal C

      Volume: 80 Issue: 3 Pages: 2841-11

    • DOI

      10.1140/epjc/s10052-020-7788-y

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sensitivity of the SHiP experiment to Heavy Neutral Leptons2019

    • Author(s)
      SHiP Collaboration (C. Ahdida (CERN) et al.).
    • Journal Title

      JHEP

      Volume: 1904 Issue: 4 Pages: 077-077

    • DOI

      10.1007/jhep04(2019)077

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Final results on neutrino oscillation parameters from the OPERA experiment in the CNGS beam2019

    • Author(s)
      N. Agafonova, T. Fukuda, T. Matsuo, S. Mikado, S. Ogawa, H. Shibuya et al. (OPERA Collaboration)
    • Journal Title

      Physical Review D

      Volume: 100 Issue: 5 Pages: 0513011-8

    • DOI

      10.1103/physrevd.100.051301

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of the cosmic ray muon flux seasonal variation with the OPERA detector2019

    • Author(s)
      N. Agafonova, T. Fukuda, T. Matsuo, S. Mikado, S. Ogawa, H. Shibuya et al. (OPERA Collaboration)
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 10 Issue: 10 Pages: 0031-12

    • DOI

      10.1088/1475-7516/2019/10/003

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fast simulation of muons produced at the SHiP experiment using Generative Adversarial Networks2019

    • Author(s)
      C. Ahdida, S. Ogawa, H. Shibuya et al. (SHiP Collaboration)
    • Journal Title

      Journal of Instrumentation

      Volume: 14 Issue: 11 Pages: P11028-P11028

    • DOI

      10.1088/1748-0221/14/11/p11028

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The experimental facility for the Search for Hidden Particles at the CERN SPS2019

    • Author(s)
      C. Ahdida, S. Ogawa, H. Shibuya et al. (SHiP collaboration)
    • Journal Title

      Journal of Instrumentation

      Volume: 14 Issue: 03 Pages: P03025-P03025

    • DOI

      10.1088/1748-0221/14/03/p03025

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Final Results of the OPERA Experiment on ντ Appearance in the CNGS Neutrino Beam2018

    • Author(s)
      N. Agafonova, T. Fukuda, T. Matsuo, S. Mikado, S. Ogawa, H. Shibuya et al. (OPERA collaboration)
    • Journal Title

      Physical Review Letters

      Volume: 120 Issue: 21 Pages: 211801-211801

    • DOI

      10.1103/physrevlett.120.211801

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Final results of the search for νμ → νe oscillations with the OPERA detector in the CNGS beam2018

    • Author(s)
      N. Agafonova, T. Fukuda, T. Matsuo, S. Mikado, S. Ogawa, H. Shibuya et al. (OPERA collaboration)
    • Journal Title

      Journal of High Energy Physics

      Volume: 2018 Issue: 6 Pages: 151-151

    • DOI

      10.1007/jhep06(2018)151

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] SHiP実験におけるタウニュートリノ研究2021

    • Author(s)
      小松雅宏, 佐藤修, 中村光廣, 中野敏行, 宮西基明, 森島邦博, 長縄直崇, 福田努, 六條宏紀, 北川暢子, 児玉康一, 渋谷寛, 小川了, 中竜大, 鶴岡千穂, 青木茂樹, 高橋覚, 三角尚治
    • 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、渋谷寛、小川了、松尾友和、森元祐介、水野耕作、高木秀彰、他NINJA Collaboration
    • 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1GeV領域のニュートリノ・鉄荷電カレント反応の全断面積測定2020

    • Author(s)
      大島仁、渋谷寛、小川了、松尾友和、森元祐介、水野耕作、高木秀彰、他NINJA Collaboration
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] SHiP実験に向けたコンパクトエマルションスペクトロメーターの開発2020

    • Author(s)
      鶴岡千穂、渋谷寛、小川了、中竜大、松尾友和、荒井知佳、大島仁、小松雅宏、他SHiP Collaboration
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] NINJA実験における反ミューニュートリノ - 鉄荷電カレント反応の研究2020

    • Author(s)
      高木秀彰, 渋谷寛, 小川了, 松尾友和, 森元祐介, 大島仁, 小坂井悠介, 水野耕作, 他 NINJA Collaboration
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Research-status 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測定結果2020

    • Author(s)
      大島仁, 渋谷寛, 小川了, 松尾友和, 森元祐介, 小坂井悠介, 水野耕作, 高木秀彰, 他 NINJA Collaboration
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] SHiP実験に向けたコンパクトエマルションスペクトロメーターの開発2020

    • Author(s)
      鶴岡千穂, 渋谷寛, 小川了, 中竜大, 福島知佳, 松尾友和, 森元祐介, 大島仁, 廣瀬寛士 他 SHiP Collaboration
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] First cross section measurement of neutrino charged current interactions in the iron ECC2019

    • Author(s)
      H. Oshima, T. Matsuo, S. Ogawa, H. Shibuya et al. (NINJA collaboration)
    • Organizer
      NUFACT 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Study of neutrino charged current interactions on iron in the NINJA experiment2019

    • Author(s)
      H. Oshima, T. Matsuo, S. Ogawa, H. Shibuya et al. (NINJA collaboration)
    • Organizer
      TAUP 2019 (16th International Conference on Topics in Astroparticle and Underground Physics)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Upgrading of momentum measurement techniques in emulsion-based particle detectors2019

    • Author(s)
      T. Matsuo, K. Hirose, A. Kono, Y. Kosakai, K. Mizono, Y. Morimoto, S. Ogawa, H. Oshima, H. Shibuya, H. Takagi, C. Tsuruoka, S. Mikado, Y. Hanaoka, T. Fukuda, M. Nakamura, O. Sato
    • Organizer
      ICMaSS 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] NINJA実験の鉄ECC中におけるニュートリノ反応解析のための基礎的測定2019

    • Author(s)
      松尾友和, 渋谷寛, 小川了, 森元祐介, 大島仁, 小坂井悠介, 水野耕作, 高木秀彰, 他 NINJA Collaboration
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [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, 渋谷寛, 小川了, 松尾友和, 森元祐介, 小坂井悠介, 水野耕作, 高木秀彰, 他 NINJA Collaboration
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] SHiP実験に向けたコンパクトエマルションスペクトロメーターの開発2019

    • Author(s)
      河野歩実, 渋谷寛, 小川了, 福島知佳, 松尾友和, 森元祐介, 大島仁, 佐伯加奈, 廣瀬寛士, 他 SHiP Collaboration
    • Organizer
      日本物理学会 第74回年次大会(2019年)
    • Related Report
      2018 Research-status Report
  • [Presentation] NINJA実験:ミューニュートリノ-鉄 荷電カレント反応の研究2019

    • Author(s)
      大島仁, 渋谷寛, 小川了, 松尾友和, 森元祐介, 小坂井悠介, 他 NINJA Collaboration
    • Organizer
      日本物理学会 第74回年次大会(2019年)
    • Related Report
      2018 Research-status Report
  • [Presentation] SHiP実験に向けたコンパクトエマルションスペクトロメーターの開発2018

    • Author(s)
      河野歩実, 渋谷寛, 小川了, 福島知佳, 松尾友和, 森元祐介, 大島仁, 佐伯加奈, 廣瀬寛士, 他 SHiP Collaboration
    • Organizer
      日本物理学会 2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] NINJA実験における反ミューニュートリノ-鉄 荷電カレント反応の解析2018

    • Author(s)
      大島仁, 渋谷寛, 小川了, 松尾友和, 森元祐介, 小坂井悠介, 他 NINJA Collaboration
    • Organizer
      日本物理学会 2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Remarks] 東邦大学 教育・研究業績 データベース

    • URL

      https://gyoseki.toho-u.ac.jp/

    • Related Report
      2019 Research-status Report
  • [Remarks] 東邦大学 理学部 物理学科 研究室・教員

    • URL

      https://www.toho-u.ac.jp/sci/ph/lab/

    • Related Report
      2019 Research-status Report

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

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