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2016 Fiscal Year Annual Research Report

ニュートリノ振動現象論の新展開と新物理の探求

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 / 非標準的相互作用
Outline of Annual Research Achievements

将来計画のHKとDUNEを組み合わせた場合の振動パラメーターの測定精度を議論した。T2HKK計画の非標準相互作用への感度を議論し、感度の系統誤差への依存性を議論した。軽いステライルニュートリノの(3+1)-スキームにおける質量行列で、テクスチャが4個ある場合の現象論を議論した。さらに軽いステライルニュートリノ1個を含むI型の拡張されたシーソー模型にテクスチャ構造に関する解析も行った。パラメータ共鳴が起こる条件をニュートリノエネルギーと物質密度分布のフーリエ周波数との間の関係として示した。7Li元素の残存量に対する標準軽元素合成理論の予言値と観測値のずれを超対称標準模型の長寿命スタウ粒子によって解決する機構を議論した。relaxion模型について、宇宙論的な制限を調べ、許されるパラメーター領域を明らかにした。8Be原子核の励起状態が基底状態へ遷移する際に放出される電子-陽電子対の不変質量および放出角度に対する理論の予言値と観測値ののずれが、B-L対称性を持つ輻射シーソー模型によって説明できる事を示した。Lμ-Lτ模型において、Belle-II実験におけるMeVスケールのU(1)ゲージボソンの検出可能性を議論した。TeVスケールの質量を持つレプトクォーク粒子の結合定数の間にあるフレーバー対称性を仮定することで、B中間子のレプトンを含む崩壊モードのレプトンフレーバーの普遍性の破れを説明し得る解が存在することを示した。近い将来の実験で観測可能な大きさのレプトン数の破れた質量次元7の有効相互作用項を導出し得る模型の現象論を議論した。democratic湯川行列から観測と矛盾しないような軽いニュートリノの質量と混合を導出した。ヒッグス粒子と物質粒子との間の相互作用(世代構造)の起源を探るために、離散的な世代対称性 S3L×S3Rを持つような大統一理論の構築を試みた。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

ニュートリノ振動現象の解析的・数値的研究に関して、大体当初の計画通りに進んでいる。

Strategy for Future Research Activity

最終年度は、質量パターン・CP位相の研究、ステライルνの現象論、非標準相互作用に対する感度、ユニタリー性のテストの研究、加速器実験の新物理への感度との比較に関する研究を、他の研究計画班とも連絡を取りながら進め、国内外での研究集会で成果の発表に努める。研究終了時の国際会議ではC01班で得られた結果を集大成する。

  • Research Products

    (48 results)

All 2017 2016 Other

All Int'l Joint Research (6 results) Journal Article (14 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 12 results,  Open Access: 8 results,  Acknowledgement Compliant: 7 results) Presentation (27 results) (of which Int'l Joint Research: 18 results,  Invited: 6 results) Remarks (1 results)

  • [Int'l Joint Research] Universidad de Valencia, IFIC(スペイン)

    • Country Name
      SPAIN
    • Counterpart Institution
      Universidad de Valencia, IFIC
  • [Int'l Joint Research] Universidad Tecnica Federico Santa Maria(チリ)

    • Country Name
      CHILE
    • Counterpart Institution
      Universidad Tecnica Federico Santa Maria
  • [Int'l Joint Research] Paul Scherrer Institut/Universitat Zurich, Physik-Institut(スイス)

    • Country Name
      SWITZERLAND
    • Counterpart Institution
      Paul Scherrer Institut/Universitat Zurich, Physik-Institut
  • [Int'l Joint Research] Physical Research Laboratory, Ahmedabad/Indian Institute of Technology, Guwahati(インド)

    • Country Name
      INDIA
    • Counterpart Institution
      Physical Research Laboratory, Ahmedabad/Indian Institute of Technology, Guwahati
  • [Int'l Joint Research] University of Adelaide(オーストラリア)

    • Country Name
      AUSTRALIA
    • Counterpart Institution
      University of Adelaide
  • [Int'l Joint Research]

    • # of Other Countries
      2
  • [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] The possibility to observe the non-standard interaction by the Hyperkamiokande atmospheric neutrino experiment2017

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

      Nuclear Physics B

      Volume: 914 Pages: 99,116

    • DOI

      http://dx.doi.org/10.1016/j.nuclphysb.2016.11.004

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Sensitivity of the T2HKK experiment to nonstandard interactions2017

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

      Physical Review D

      Volume: 95 Pages: 055005-1,9

    • DOI

      http://dx.doi.org/10.1103/PhysRevD.95.055005

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Detecting the Lμ- Lτ gauge boson at Belle II2017

    • Author(s)
      Takeshi Araki, Shihori Hoshino, Toshihiko Ota, Joe Sato, Takashi Shimomura
    • Journal Title

      Physical Review D

      Volume: 95 Pages: 055006-1,10

    • DOI

      http://dx.doi.org/10.1103/PhysRevD.95.055006

    • Peer Reviewed
  • [Journal Article] Phenomenological study of extended seesaw model for light sterile neutrino2017

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

      Journal of High Energy Physics

      Volume: 1703 Pages: 075-1,28

    • DOI

      http://dx.doi.org/10.1007/JHEP03(2017)075

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Analysis of right-handed Majorana neutrino mass in an SU(4)×SU(2)L×SU(2)R Pati-Salam model with democratic texture2017

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

      Physical Review D

      Volume: 95 Pages: 055029-1,9

    • DOI

      http://dx.doi.org/10.1103/PhysRevD.95.055029

    • Peer Reviewed
  • [Journal Article] Implications of δCP = -90 towards determining hierarchy and octant at T2K and T2K-II2017

    • Author(s)
      Monojit Ghosh, Srubabati Goswami, Sushant K. Raut
    • Journal Title

      Modern Physics Letters A

      Volume: 32 Pages: 1750034-1,14

    • DOI

      http://dx.doi.org/10.1142/S0217732317500341

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The KTY formalism and nonadiabatic contributions to the neutrino oscillation probability2016

    • Author(s)
      Osamu Yasuda
    • Journal Title

      Nuclear and Particle Physics Proceedings

      Volume: 273-275 Pages: 1789,1794

    • DOI

      http://dx.doi.org/10.1016/j.nuclphysbps.2015.09.288

    • Open Access / Acknowledgement Compliant
  • [Journal Article] Improved analyses for in muonic atoms by contact interactions2016

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

      Physical Review D

      Volume: 93 Pages: 076006-1,8

    • DOI

      http://dx.doi.org/10.1103/PhysRevD.93.076006

    • Peer Reviewed
  • [Journal Article] Long-range contributions to double beta decay revisited2016

    • Author(s)
      J. C. Helo, M. Hirsch, T. Ota
    • Journal Title

      Journal of High Energy Physics

      Volume: 1606 Pages: 006-1,32

    • DOI

      http://dx.doi.org/10.1007/JHEP06(2016)006

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Constraints on the flavor-dependent non-standard interaction in propagation from atmospheric neutrinos2016

    • Author(s)
      Osamu Yasuda
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 718 Pages: 062072-1,5

    • DOI

      http://dx.doi.org/10.1088/1742-6596/718/6/062072

    • Open Access / Acknowledgement Compliant
  • [Journal Article] Parametric Resonance in Neutrino Oscillation: A Guide to Control the Effects of Inhomogeneous Matter Density2016

    • Author(s)
      Masafumi Koike, Toshihiko Ota, Masako Saito, Joe Sato
    • Journal Title

      Physics Letters B

      Volume: 759 Pages: 266,271

    • DOI

      http://dx.doi.org/10.1016/j.physletb.2016.05.083

    • Peer Reviewed / Open Access
  • [Journal Article] Hierarchical majorana neutrinos from democratic mass matrices2016

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

      Physics Letters B

      Volume: 760 Pages: 747,752

    • DOI

      http://dx.doi.org/10.1016/j.physletb.2016.06.079

    • Peer Reviewed / Open Access
  • [Journal Article] Analysis of four-zero textures in the 3+1 neutrino framework2016

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

      Physical Review D

      Volume: 94 Pages: 113001-1,13

    • DOI

      http://dx.doi.org/10.1103/PhysRevD.94.113001

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Role of DUNE near detector to reduce Systematic Uncertainty2017

    • Author(s)
      Monojit Ghosh
    • Organizer
      DUNE near detector workshop
    • Place of Presentation
      Fermilab, USA
    • Year and Date
      2017-03-27 – 2017-03-29
    • Int'l Joint Research
  • [Presentation] 将来のニュートリノ実験で期待される物理 ---CPの破れ・非標準相互作用---2017

    • Author(s)
      安田修
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Year and Date
      2017-03-17 – 2017-03-20
    • Invited
  • [Presentation] Minimal Lμ- Lτ型 相互作用に伴う軽いゲージボソンの検証可能性2017

    • Author(s)
      星野志穂里, 荒木威, 太田俊彦, 佐藤丈, 下村崇
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Year and Date
      2017-03-17 – 2017-03-20
  • [Presentation] Lμ- Lτゲージ対称性に伴うMeVスケールの軽いゲージ粒子の探索について2017

    • Author(s)
      金田佑哉, 下村崇
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Year and Date
      2017-03-17 – 2017-03-20
  • [Presentation] Effect of systematics in T2HKK and DUNE2017

    • Author(s)
      Monojit Ghosh
    • Organizer
      Meeting for the Second Hyper-K Tank in Korea
    • Place of Presentation
      Kavli IPMU, The University of Tokyo, Japan
    • Year and Date
      2017-02-16 – 2017-02-16
    • Int'l Joint Research
  • [Presentation] A search for a light Lμ - Lτ gauge boson at Belle-II through radiatively induced kinetic mixing2017

    • Author(s)
      Takeshi Araki
    • Organizer
      KEK Theory Meeting on Particle Physics Phenomenology (KEK-PH2017)
    • Place of Presentation
      KEK, Japan
    • Year and Date
      2017-02-14 – 2017-02-17
    • Int'l Joint Research
  • [Presentation] Neutrino Trident Production2017

    • Author(s)
      下村崇
    • Organizer
      第30回宇宙ニュートリノ研究会
    • Place of Presentation
      東大宇宙線研
    • Year and Date
      2017-02-04 – 2017-02-04
  • [Presentation] Is nonstandard interaction a solution to the three neutrino tensions?2016

    • Author(s)
      Osamu Yasuda
    • Organizer
      A topical conference on elementary particles, astrophysics, and cosmology (Miami2016)
    • Place of Presentation
      Fort Lauderdale, Florida, USA
    • Year and Date
      2016-12-14 – 2016-12-20
    • Int'l Joint Research
  • [Presentation] MeV scale leptonic force for cosmic neutrino spectrum and muon anomalous magnetic moment2016

    • Author(s)
      Joe Sato
    • Organizer
      The 13th International Symposium on Cosmology and Particle Astrophysics (CosPA 2016)
    • Place of Presentation
      Sydney Nanoscience Hub , Sydney, Australia
    • Year and Date
      2016-11-28 – 2016-12-02
    • Int'l Joint Research
  • [Presentation] Search for a light Lμ- Lτ gauge boson at Belle II2016

    • Author(s)
      Shihori Hoshino
    • Organizer
      The 13th International Symposium on Cosmology and Particle Astrophysics (CosPA 2016)
    • Place of Presentation
      Sydney Nanoscience Hub , Sydney, Australia
    • Year and Date
      2016-11-28 – 2016-12-02
    • Int'l Joint Research
  • [Presentation] Tensions in the current neutrino data and non-standard interactions2016

    • Author(s)
      Monojit Ghosh
    • Organizer
      ニュートリノフロンティア研究会 2016
    • Place of Presentation
      山代温泉 ゆのくに天祥
    • Year and Date
      2016-11-28 – 2016-11-30
  • [Presentation] Light gauge boson and neutrino trident production process2016

    • Author(s)
      下村崇
    • Organizer
      ニュートリノフロンティア研究会 2016
    • Place of Presentation
      山代温泉 ゆのくに天祥
    • Year and Date
      2016-11-28 – 2016-11-30
  • [Presentation] Detection possibility of Lμ- Lτ model2016

    • Author(s)
      下村崇
    • Organizer
      ニュートリノフロンティア研究会 2016
    • Place of Presentation
      山代温泉 ゆのくに天祥
    • Year and Date
      2016-11-28 – 2016-11-30
  • [Presentation] Sensitivity of T2HKK to non-standard interaction2016

    • Author(s)
      Monojit Ghosh
    • Organizer
      The First Workshop on the Second Hyper-Kamiokande Detector in Korea
    • Place of Presentation
      Seoul National University, Seoul, South Korea
    • Year and Date
      2016-11-21 – 2016-11-22
    • Int'l Joint Research / Invited
  • [Presentation] Charged Lepton Flavor Violation from theory side2016

    • Author(s)
      Joe Sato
    • Organizer
      Intensity Frontier in Particle Physics: Flavor, CP Violation and Dark Physics
    • Place of Presentation
      National Taiwan University, Taipei, Taiwan
    • Year and Date
      2016-09-26 – 2016-09-27
    • Int'l Joint Research / Invited
  • [Presentation] Available parameter region of the original relaxion model2016

    • Author(s)
      小林達夫, 瀬戸治, 下村崇, 浦川優子
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      宮崎大学木花キャンパス
    • Year and Date
      2016-09-21 – 2016-09-24
  • [Presentation] Democratic湯川行列による階層的なニュートリノ質量2016

    • Author(s)
      梁正樹
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      宮崎大学木花キャンパス
    • Year and Date
      2016-09-21 – 2016-09-24
  • [Presentation] Possible observation of the non-standard interaction effects at Hyperkamiokande2016

    • Author(s)
      Osamu Yasuda
    • Organizer
      Neutrino Oscillation Workshop (NOW 2016)
    • Place of Presentation
      Otranto, Lecce, Italy
    • Year and Date
      2016-09-04 – 2016-09-11
    • Int'l Joint Research
  • [Presentation] Complementarity Between Hyperkamiokande and DUNE2016

    • Author(s)
      Osamu Yasuda
    • Organizer
      12th Rencontres du Vietnam (NuFact 2016)
    • Place of Presentation
      ICISE, Quy Nhon, Vietnam
    • Year and Date
      2016-08-21 – 2016-08-27
    • Int'l Joint Research / Invited
  • [Presentation] Will atmospheric neutrino experiment at Hyper-Kamiokande see non-standard interaction effects?2016

    • Author(s)
      Osamu Yasuda
    • Organizer
      12th Rencontres du Vietnam (NuFact 2016)
    • Place of Presentation
      ICISE, Quy Nhon, Vietnam
    • Year and Date
      2016-08-21 – 2016-08-27
    • Int'l Joint Research
  • [Presentation] Reason for T2K to run in dominant neutrino mode for detecting CP violation2016

    • Author(s)
      Monojit Ghosh
    • Organizer
      12th Rencontres du Vietnam (NuFact 2016)
    • Place of Presentation
      ICISE, Quy Nhon, Vietnam
    • Year and Date
      2016-08-21 – 2016-08-27
    • Int'l Joint Research
  • [Presentation] Hierarchical majorana neutrinos from democratic mass matrices2016

    • Author(s)
      Masaki J. S. Yang
    • Organizer
      Summer Institute 2016
    • Place of Presentation
      Xi-Tou, Taiwan
    • Year and Date
      2016-08-17 – 2016-08-23
    • Int'l Joint Research
  • [Presentation] Hierarchical majorana neutrinos from democratic mass matrices2016

    • Author(s)
      Masaki J. S. Yang
    • Organizer
      22nd International Symposium on Particles, Strings and Cosmology (PASCOS 2016)
    • Place of Presentation
      ICISE, Quy Nhon, Vietnam
    • Year and Date
      2016-07-10 – 2016-07-16
    • Int'l Joint Research
  • [Presentation] CLFV theoretical review2016

    • Author(s)
      Joe Sato
    • Organizer
      22nd International Symposium on Particles, Strings and Cosmology (PASCOS 2016)
    • Place of Presentation
      ICISE, Quy Nhon, Vietnam
    • Year and Date
      2016-07-10 – 2016-07-16
    • Int'l Joint Research / Invited
  • [Presentation] Sensitivity of atmospheric neutrino experiments to neutrino non-standard interactions2016

    • Author(s)
      Shinya Fukasawa
    • Organizer
      The XXVII international conference on neutrino physics and astrophysics (Neutrino2016)
    • Place of Presentation
      Imperial collage London, UK
    • Year and Date
      2016-07-04 – 2016-07-09
    • Int'l Joint Research
  • [Presentation] Mind the Gap on IceCube2016

    • Author(s)
      Toshihiko Ota
    • Organizer
      The XXVII international conference on neutrino physics and astrophysics (Neutrino2016)
    • Place of Presentation
      Imperial collage London, UK
    • Year and Date
      2016-07-04 – 2016-07-09
    • Int'l Joint Research
  • [Presentation] Synergy of T2HK & DUNE2016

    • Author(s)
      Osamu Yasuda
    • Organizer
      3rd International Meeting on Large Neutrino Infrastructures
    • Place of Presentation
      KEK, Japan
    • Year and Date
      2016-05-30 – 2016-05-31
    • Int'l Joint Research / Invited
  • [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: 2018-01-16  

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