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Road toward the next standard model explored with muon precision physics

Research Project

Project/Area Number 16K05323
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHigh Energy Accelerator Research Organization (2017-2018)
Kagawa National College of Technology (2016)

Principal Investigator

Nomura Daisuke  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, 研究員 (40583555)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsミューオン / 異常磁気能率 / 素粒子の標準模型 / 強い相互作用 / 標準模型を超える物理 / 素粒子論 / 原子・分子物理
Outline of Final Research Achievements

We have reevaluated the hadronic leading-order contribution to the muon g-2, which has the largest uncertainty in the Standard Model prediction for the muon g-2. Compared to our previous analysis, we have included new input data, have reevaluated the uncertainties associated with radiative corrections to the hadronic data, and have improved the way to combine various hadronic data. Our main conclusion is that there is a 3.7 sigma discrepancy between the experimental value of the muon g-2 and the Standard Model prediction, which may be a hint of new physics beyond the Standard Model.

Academic Significance and Societal Importance of the Research Achievements

素粒子の標準模型を超える新物理が存在するかどうかは素粒子物理学において大きな問題である。我々の得た結果はミューオンの異常磁気能率について標準模型の予言する値と実験値とがあまりよく一致しないことを意味しており、これによって標準模型を超える新物理が存在する可能性はさらに高まったと言える。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (24 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (8 results) Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (12 results) (of which Int'l Joint Research: 9 results,  Invited: 10 results)

  • [Int'l Joint Research] University of Liverpool(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Universidade de Sao Paulo(ブラジル)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Universitat Autonoma de Barcelona(スペイン)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] San Francisco State University(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] York University/University of Victoria/University of British Columbia(カナダ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Liverpool(英国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] University of Liverpool(United Kingdom)

    • Related Report
      2016 Research-status Report
  • [Journal Article] A New Approach for Measuring the Muon Anomalous Magnetic Moment and Electric Dipole Moment2019

    • Author(s)
      M. Abe, S. Bae, G. Beer, (途中50名省略), D. Nomura, (以下省略。全96名)
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Muon g‐2 and alpha: A new data‐based analysis2018

    • Author(s)
      Alexander Keshavarzi, Daisuke Nomura, Thomas Teubner
    • Journal Title

      Physical Review D

      Volume: 97 Issue: 11 Pages: 114025-114025

    • DOI

      10.1103/physrevd.97.114025

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Strong coupling from e^+ e^‐ ‐‐> hadrons below charm2018

    • Author(s)
      Diogo Boito, Maarten Golterman, Alexander Keshavarzi, Kim Maltman, Daisuke Nomura, Santiago Peris, Thomas Teubner
    • Journal Title

      Physical Review D

      Volume: 98 Issue: 7 Pages: 074030-074030

    • DOI

      10.1103/physrevd.98.074030

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The muon g-2 and \alpha(M_Z^2): a new data-based analysis2018

    • Author(s)
      Alexander Keshavarzi, Daisuke Nomura, and Thomas Teubner
    • Journal Title

      Physical Review D

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Muon g-2: a new data-based analysis2019

    • Author(s)
      D. Nomura
    • Organizer
      international worksop "e^+ e^- Collisions From Phi to Psi 2019 (Phipsi19)"
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ミューオン異常磁気能率に対する標準理論計算:最近の進展2019

    • Author(s)
      野村大輔
    • Organizer
      日本物理学会 第 74 回年次大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Standard Model prediction for the muon g-22018

    • Author(s)
      D. Nomura
    • Organizer
      The 20th International Workshop on Neutrinos from Accelerators (NuFACT 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon g-2: a new data-based anlysis2018

    • Author(s)
      D. Nomura
    • Organizer
      2018 WPI-next mini-workshop ‘Hints for New Physics in Heavy Flavors’
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Hadronic vacuum polarization contribution to the muonium HFS and related topics2018

    • Author(s)
      D. Nomura
    • Organizer
      worksop “Physics of muonium and related topics”
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] muon g-2 の理論2018

    • Author(s)
      野村大輔
    • Organizer
      Flavor Physics Workshop 2018
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Hadronic Leading Order Contribution to the Muon g-22017

    • Author(s)
      Daisuke Nomura
    • Organizer
      International Workshop on Flavour changing and conserving processes (FCCP 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Improved and updated Standard Model prediction for muon g-22017

    • Author(s)
      野村大輔, A. Keshavarzi, T. Teubner
    • Organizer
      日本物理学会 2017 年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Standard Model prediction for neutron EDM revisited2017

    • Author(s)
      Daisuke Nomura
    • Organizer
      RCNP workshop on Fundamental Physics using Neutrons and Atoms
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Hadronic Contributions to Muon g-22016

    • Author(s)
      Daisuke Nomura
    • Organizer
      workshop "Towards high precision muon g-2/EDM measurement at J-PARC"
    • Place of Presentation
      J-PARC, Tokai, Ibaraki, Japan
    • Year and Date
      2016-11-28
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Hadronic contributions to muon g-22016

    • Author(s)
      Daisuke Nomura
    • Organizer
      The 6th KIAS Workshop on Particle Physics and Cosmology and the 2nd Durham-KEK-KIPMU-KIAS Joint Workshop
    • Place of Presentation
      KIAS, Seoul, South Korea
    • Year and Date
      2016-10-24
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Status of Calculation of \alpha_{QED}(M_Z^2) and muon g-22016

    • Author(s)
      Daisuke Nomura
    • Organizer
      workshop "Precision theory for precise measurements at the LHC and future colliders''
    • Place of Presentation
      Quy Nhon, Vietnam
    • Year and Date
      2016-09-25
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2016-04-21   Modified: 2020-03-30  

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