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2017 Fiscal Year Annual Research Report

New developments in neutrino oscillation phenomenology and search for new physics

Planned Research

Project AreaUnification and Development of the Neutrino Science Frontier
Project/Area Number 25105009
Research InstitutionTokyo Metropolitan University

Principal Investigator

安田 修  首都大学東京, 理工学研究科, 教授 (50183116)

Co-Investigator(Kenkyū-buntansha) 佐藤 丈  埼玉大学, 理工学研究科, 准教授 (60322294)
Project Period (FY) 2013-06-28 – 2018-03-31
Keywordsニュートリノ振動 / ニュートリノ質量 / フレーバー混合 / レプトンフレーバーの破れ / 非標準相互作用
Outline of Annual Research Achievements

太陽ニュートリノと長基線原子炉ニュートリノ実験カムランドの質量自乗差の違いから示唆されている非標準相互作用の領域に対し、T2HKK実験とDUNE実験がどれだけ感度を持つかを調べ、太陽+カムランドのグローバルフィットのベストフィット点に対しては両実験ともに3σ以上の感度があることがわかった。小加速器からのμ粒子の静止崩壊するデータをT2HKと組み合わせることにより、質量パターンとCP位相に対する感度が増大することを示した。ステライルニュートリノを含む(3+1)-スキームでパラメーター縮退を考察し、新しい種類の縮退を発見した。ミュー粒子の異常磁気能率を説明しえる U(1)(L_μ - L_τ) 対称性を持つ模型を考え、対称性を破るスカラー場と対称性のゲージ粒子をLHCとILC実験でどこまで検証できるかを明らかにした。リチウム問題(6Liと7Li)を解決できる領域で、3つの異なる右巻きマヨラナ・ニュートリノの質量比を仮定して模型の構築を行い、この模型が現在存在するすべての実験結果を3σ以内で満足させることを示した。又、ミュオン異常磁気モーメントとBr(μ->eγ)の予言値について議論した。非可換幾何学におけるヒッグス質量保護の一つの可能性として、ヒッグス場とゲージ場を混合するような変換を考え、5次元ローレンツ変換に相当するものを暫定的に場の強さF_{μν}と共変微分D_μ Hの間の対称性として書き出し、形式的にヒッグス質量を禁止することを示した。非可換ヒッグス模型でフェルミオンの表現空間を広げ、ψ_{L,R}に直交した補空間にある種の波動関数分布 を仮定すると、自明なゲージ相互作用を保ちながら湯川行列がwaterfall構造及びlopsided構造を持つことを示した。

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

  • Research Products

    (43 results)

All 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (16 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 12 results,  Open Access: 9 results) Presentation (23 results) (of which Int'l Joint Research: 10 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] Indian Institute of Technology, Guwahati/Institute of Physics, Bhubaneswar(インド)

    • Country Name
      INDIA
    • Counterpart Institution
      Indian Institute of Technology, Guwahati/Institute of Physics, Bhubaneswar
  • [Int'l Joint Research] University of Adelaide/ARC, CoEPP, University of Melbourne(オーストラリア)

    • Country Name
      AUSTRALIA
    • Counterpart Institution
      University of Adelaide/ARC, CoEPP, University of Melbourne
  • [Int'l Joint Research] Institute for Basic Science, Daejeon(韓国)

    • Country Name
      KOREA (REP. OF KOREA)
    • Counterpart Institution
      Institute for Basic Science, Daejeon
  • [Journal Article] Improved analysis for μ-e-→e-e-in muonic atoms by photonic interaction2018

    • Author(s)
      Yuichi Uesaka, Yoshitaka Kuno, Joe Sato, Toru Sato, Masato Yamanaka
    • Journal Title

      Phys.Rev. D

      Volume: 97 Pages: 015017-1-9

    • DOI

      dx.doi.org/10.1103/PhysRevD.97.015017

    • Peer Reviewed
  • [Journal Article] Flavor structure from misalignment of inner products in noncommutative geometry2018

    • Author(s)
      Masaki J. S. Yang
    • Journal Title

      JHEP

      Volume: 1801 Pages: 023-1-7

    • DOI

      doi.org/10.1007/JHEP01(2018)023

    • Peer Reviewed / Open Access
  • [Journal Article] The sensitivity of the T2HKK experiment to the flavor-dependent non-standard interactions2018

    • Author(s)
      Osamu Yasuda
    • Journal Title

      PoS

      Volume: NuFact2017 Pages: 131-1-6

    • Open Access
  • [Journal Article] A proposal of a New Charged Lepton Flavor Violation Experiment: μ-e-→e-e- in muonic atom2018

    • Author(s)
      J. Sato, Y. Uesaka, Y. Kuno, T. Sato, M. Yamanaka
    • Journal Title

      PoS

      Volume: NuFact2017 Pages: 125-1-6

    • Open Access
  • [Journal Article] Relaxion window2017

    • Author(s)
      Tatsuo Kobayashi, Osamu Seto, Takashi Shimomura, Yuko Urakawa
    • Journal Title

      Modern Physics Letter

      Volume: A32 Pages: 1750142-1-13

    • DOI

      doi.org/10.1142/S0217732317501425

    • Peer Reviewed
  • [Journal Article] Study of parameter degeneracy and hierarchy sensitivity of NOν A in presence of sterile neutrino2017

    • Author(s)
      Monojit Ghosh, Shivani Gupta, Zachary M. Matthews, Pankaj Sharma, Anthony G. Williams
    • Journal Title

      Phys.Rev. D

      Volume: 96 Pages: 075018-1-8

    • DOI

      dx.doi.org/10.1103/PhysRevD.96.075018

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Texture zeros of low-energy Majorana neutrino mass matrix in 3+1 scheme2017

    • Author(s)
      Debasish Borah, Monojit Ghosh, Shivani Gupta, Sushant K. Raut
    • Journal Title

      Phys.Rev. D

      Volume: 96 Pages: 055017-1-14

    • DOI

      dx.doi.org/10.1103/PhysRevD.96.055017

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Simultaneous Explanation of R(D()) and b→sμ+μ-: The Last Scalar Leptoquarks Standing2017

    • Author(s)
      Andreas Crivellin, Dario Mller, Toshihiko Ota
    • Journal Title

      JHEP

      Volume: 1709 Pages: 040-1-16

    • DOI

      dx.doi.org/10.1007/JHEP09(2017)040

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Solution to Lithium Problem by Long-Lived Stau2017

    • Author(s)
      Joe Sato, Takashi Shimomura, Masato Yamanaka
    • Journal Title

      International Journal of Modern Physics

      Volume: E26 Pages: 1741005-1-24

    • DOI

      doi.org/10.1142/S0218301317410051

    • Peer Reviewed
  • [Journal Article] Effect of systematics in T2HK, T2HKK and DUNE2017

    • Author(s)
      Monojit Ghosh, Osamu Yasuda
    • Journal Title

      Phys.Rev. D

      Volume: 96 Pages: 013001-1-12

    • DOI

      dx.doi.org/10.1103/PhysRevD.96.013001

    • Peer Reviewed
  • [Journal Article] NSI at Hyper-Kamiokande2017

    • Author(s)
      Osamu Yasuda
    • Journal Title

      PoS

      Volume: NOW2016 Pages: 029-1-3

    • DOI

      doi.org/10.22323/1.283.0029

    • Open Access
  • [Journal Article] Atomki anomaly and dark matter in a radiative seesaw model with gauged B-L symmetry2017

    • Author(s)
      Osamu Seto, Takashi Shimomura
    • Journal Title

      Phys.Rev. D

      Volume: 95 Pages: 095032-1-9

    • DOI

      doi.org/10.1103/PhysRevD.95.095032

    • Peer Reviewed
  • [Journal Article] A hybrid setup for fundamental unknowns in neutrino oscillations using T2HK (ν) and μ-DAR (ν ̄)2017

    • Author(s)
      Sanjib Kumar Agarwalla, Monojit Ghosh, Sushant K. Raut
    • Journal Title

      JHEP

      Volume: 1705 Pages: 115-1-19

    • DOI

      dx.doi.org/10.1007/JHEP05(2017)115

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On the possibility of search for Lμ- Lτ gauge boson at Belle-II and neutrino beam experiments2017

    • Author(s)
      Yuya Kaneta, Takashi Shimomura
    • Journal Title

      PTEP

      Volume: 2017 Pages: 053B04-1-16

    • DOI

      dx.doi.org/10.1093/ptep/ptx050

    • Peer Reviewed / Open Access
  • [Journal Article] Complementarity Between Hyperkamiokande and DUNE in Determining Neutrino Oscillation Parameters2017

    • Author(s)
      Shinya Fukasawa, Monojit Ghosh, Osamu Yasuda
    • Journal Title

      Nucl.Phys.

      Volume: B918 Pages: 337-357

    • DOI

      dx.doi.org/10.1016/j.nuclphysb.2017.02.008

    • Peer Reviewed / Open Access
  • [Journal Article] What antineutrinos can tell about octant and δCP in DUNE?2017

    • Author(s)
      Newton Nath, Monojit Ghosh, Srubabati Goswami
    • Journal Title

      PoS

      Volume: ICHEP2016 Pages: 979-1-4

    • DOI

      doi.org/10.22323/1.282.0979

    • Open Access / Int'l Joint Research
  • [Presentation] New developments in neutrino oscillation phenomenology and search for new physics2018

    • Author(s)
      Osamu Yasuda
    • Organizer
      The close out meeting of the Unification and Development of the Neutrino Science Frontier
    • Int'l Joint Research
  • [Presentation] 太陽ニュートリノから示唆される非標準相互作用のT2HKKとDUNEによる検証可能性2018

    • Author(s)
      安田修, Monojit Ghosh
    • Organizer
      日本物理学会 第73回年次大会
  • [Presentation] Testing NSI suggested by the solar neutrino tension in T2HKK and DUNE2017

    • Author(s)
      Osamu Yasuda
    • Organizer
      A topical conference on elementary particles, astrophysics and cosmology (Miami2017)
    • Int'l Joint Research
  • [Presentation] A hybrid setup for fundamental unknowns using T2HK and μ-DAR2017

    • Author(s)
      Monojit Ghosh
    • Organizer
      A topical conference on elementary particles, astrophysics and cosmology (Miami2017)
    • Int'l Joint Research
  • [Presentation] Parameter degeneracy and hierarchy sensitivity of NOvA in presence of sterile neutrino2017

    • Author(s)
      Monojit Ghosh
    • Organizer
      The 19th International Workshop on Neutrinos from Accelerators (NUFACT2017)
    • Int'l Joint Research
  • [Presentation] The sensitivity of the T2HKK experiment to the flavor-depednent non-standard interactions2017

    • Author(s)
      Osamu Yasuda
    • Organizer
      The 19th International Workshop on Neutrinos from Accelerators (NUFACT2017)
    • Int'l Joint Research
  • [Presentation] A proposal of a New Charged Lepton Flavor Violation Experiment: μ-e-→e-e- in muonic atom2017

    • Author(s)
      Joe Sato
    • Organizer
      The 19th International Workshop on Neutrinos from Accelerators (NUFACT2017)
    • Int'l Joint Research
  • [Presentation] Sensitivity of the T2HKK experiment to the non-standard interaction2017

    • Author(s)
      Osamu Yasuda
    • Organizer
      INTERNATIONAL SCHOOL OF NUCLEAR PHYSICS, 39th Course
    • Int'l Joint Research
  • [Presentation] Complementarity Between Hyperkamiokande and DUNE2017

    • Author(s)
      Monojit Ghosh
    • Organizer
      INTERNATIONAL SCHOOL OF NUCLEAR PHYSICS, 39th Course
    • Int'l Joint Research
  • [Presentation] Sensitivity of the T2HKK experiment to the non-standard interactions2017

    • Author(s)
      Monojit Ghosh
    • Organizer
      18th Lomonosov Conference on Elementary Particle Physics
    • Int'l Joint Research
  • [Presentation] Detecting the Lμ-Lτ gauge boson at Belle II2017

    • Author(s)
      Joe Sato
    • Organizer
      B2TiP & First Physics Workshop
    • Int'l Joint Research
  • [Presentation] Atomki anomaly and dark matter in a radiative seesaw model with gauged B-L symmetry2017

    • Author(s)
      T. Shimomura
    • Organizer
      新学術領域研究「ニュートリノフロンティアの融合と進化」研究会
  • [Presentation] cMSSM Dark Matter and flavored leptogenesis2017

    • Author(s)
      Y. Takanishi
    • Organizer
      新学術領域研究「ニュートリノフロンティアの融合と進化」研究会
  • [Presentation] Physics potentials of the future neutrino oscillation experiments2017

    • Author(s)
      M. Ghosh
    • Organizer
      新学術領域研究「ニュートリノフロンティアの融合と進化」研究会
  • [Presentation] Introduction2017

    • Author(s)
      J. Sato
    • Organizer
      新学術領域研究「ニュートリノフロンティアの融合と進化」研究会
  • [Presentation] Atomki anomaly and dark matter in a radiative seesaw model with gauged B-L symmetry2017

    • Author(s)
      下村崇
    • Organizer
      研究会「地上実験で検証可能な新物理」
  • [Presentation] Search for Lμ- Lτ gauge boson at Belle II2017

    • Author(s)
      下村崇
    • Organizer
      Flavor Physics Workshop 2017
  • [Presentation] Search for Lμ- Lτ gauge boson at Belle II2017

    • Author(s)
      下村崇
    • Organizer
      新ヒッグス勉強会第20回定例会
  • [Presentation] A possibility on prohibition of Higgs mass by the extended Lorentz transformation in noncommutative geometry2017

    • Author(s)
      Masaki Yang
    • Organizer
      Summer Institute 2017
  • [Presentation] cMSSM Dark Matter and Leptogenesis2017

    • Author(s)
      Yasutaka Takanishi
    • Organizer
      Summer Institute 2017
  • [Presentation] レプトンフレーバーの破れを見る新しい実験の提案2017

    • Author(s)
      佐藤丈
    • Organizer
      第一回琉球大学計算科学シンポジウム“素粒子と物性・化学は協力し合える!
    • Invited
  • [Presentation] Atomki anomaly and dark matter in a radiative seesaw model with gauged B-L symmetry2017

    • Author(s)
      瀬戸治, 下村崇
    • Organizer
      日本物理学会 2017年秋季大会
  • [Presentation] 非可換幾何学における拡張ローレンツ変換によるヒッグス質量保護の可能性について2017

    • Author(s)
      梁正樹
    • Organizer
      日本物理学会 2017年秋季大会
  • [Remarks] C01班「ニュートリノ振動現象論の新展開と新物理の探求」

    • URL

      http://musashi.phys.se.tmu.ac.jp/~yasuda/nushin/

URL: 

Published: 2018-12-17  

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