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Flavor physics of quarls and leptons in LHC era

Research Project

Project/Area Number 15K05045
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 InstitutionNiigata University

Principal Investigator

TANIMOTO MORIMITSU  新潟大学, 自然科学系, フェロー (90108366)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsニュートリノフレーバー混合 / クォークフレーバー混合 / フレーバー対称性 / CP対称性の破れ / モジュラー対称性 / クォーク質量行列 / ニュートリノ質量行列 / 宇宙の物質生成 / CKM混合 / 宇宙のバリオン数生成 / ニュートリノ振動 / レプトンCP対称性の破れ / クォークのCP対称性の破れ / 超対称性 / B中間子希少崩壊 / K中間子希少崩壊
Outline of Final Research Achievements

Our project is to reveal the flavor structure by using the flavor symmetry. Our results are summarized as follows:
(1) Even if the masses of SUSY particles are larger than 10 TeV, the Z penguin process induced by the gluino can enhance the branching ratio of the KL→πνν decay. (2) I have succeeded to build the minimal seesaw model, which is consistent with neutrino mixing angles and masses, and then have predicted the CP violating Dirac phase. (3) I have presented the successful results of the lepton mass matrix by using the A4 modular symmetry. The predicted CP violating phase is a distinguishable one compared with other models. This work is refered as a typical prediction by using the modular symmetry.

Academic Significance and Societal Importance of the Research Achievements

本研究は、ニュートリノ振動の精密実験結果に基づきフレーバー対称性の証拠を現象論的に明らかにするとともに、LHC実験とBell-Ⅱ実験に基づくB中間子のCP対称性の破れ等の研究を通して、クォークとレプトンのフレーバー構造を統一的に解明することである。とりわけ、フレーバーの新しい可能性である超ひも理論起源のmodular対称性を用いて画期的な成果が得られたことで、超ひも理論と低エネルギーの現象を結び付ける道筋が見えてきた。今後、素粒子実験の計画と超ひも理論に与える影響は大きいと思われる。また宇宙の物質生成の起源の研究にも影響をあたえるので、宇宙の理解が進むという点で,その社会的意義は大きい。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (28 results)

All 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (1 results) Journal Article (14 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 14 results,  Open Access: 14 results,  Acknowledgement Compliant: 5 results) Presentation (13 results) (of which Int'l Joint Research: 11 results,  Invited: 13 results)

  • [Int'l Joint Research] SISSA(イタリア)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] CP violation of quarks in A4 modular invariance2019

    • Author(s)
      H. Okada, M. Tanimoto
    • Journal Title

      Phys.Lett. B

      Volume: 791 Pages: 54-61

    • DOI

      10.1016/j.physletb.2019.02.028

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Trimaximal Neutrino Mixing from Modular A4 Invariance with Residual Symmetries2019

    • Author(s)
      P.P.Novichkov, S.T.Petcov, M.Tanimoto,
    • Journal Title

      Phys.Lett. B

      Volume: 793 Pages: 247-258

    • DOI

      10.1016/j.physletb.2019.04.043

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sign of CP violating phase in quarks and leptons2019

    • Author(s)
      Shimizu Yusuke、Takagi Kenta、Takahashi Shunya、Tanimoto Morimitsu
    • Journal Title

      Journal of High Energy Physics

      Volume: 2019 Issue: 4 Pages: 1-24

    • DOI

      10.1007/jhep04(2019)074

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Revisiting the A4 model for leptons in light of NuFIT 3.22018

    • Author(s)
      Kang Sin Kyu、Shimizu Yusuke、Takagi Kenta、Takahashi Shunya、Tanimoto Morimitsu
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2018 Issue: 8 Pages: 1-20

    • DOI

      10.1093/ptep/pty080

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Modular A4 invariance and neutrino mixing2018

    • Author(s)
      Kobayashi Tatsuo、Omoto Naoya、Shimizu Yusuke、Takagi Kenta、Tanimoto Morimitsu、Tatsuishi Takuya H.
    • Journal Title

      Journal of High Energy Physics

      Volume: 2018 Issue: 11 Pages: 1-18

    • DOI

      10.1007/jhep11(2018)196

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neutrino CP violation and sign of baryon asymmetry in the minimal seesaw model2018

    • Author(s)
      Yusuke Shimizu, Kenta Takagi, Morimitsu Tanimoto
    • Journal Title

      Physics Letters B

      Volume: 778 Pages: 6-16

    • DOI

      10.1016/j.physletb.2017.12.065

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dirac CP phase in the neutrino mixing matrix and the Froggatt-Nielsen mechanism with det [Mnu]=02017

    • Author(s)
      Yuya Kaneta, Morimitsu Tanimoto,. Tutomu Yanagida
    • Journal Title

      Physics Letters B

      Volume: 770 Pages: 546-550

    • DOI

      10.1016/j.physletb.2017.05.025

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Towards the minimal seesaw model via CP violation of neutrinos2017

    • Author(s)
      Yusuke Shimizu, Kenta Takagi, Morimitsu Tanimoto
    • Journal Title

      JHEP 1711 (2017) 201

      Volume: 1711 Issue: 11 Pages: 201-228

    • DOI

      10.1007/jhep11(2017)201

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] CP violating phase from minimal texture neutrino mass matrix: Test of the phase relevant to leptogenesis2017

    • Author(s)
      Masataka Fukugita, Yuya Kaneta, Yusuke Shimizu, Morimitsu Tanimoto, Tutomu T. Yanagida
    • Journal Title

      Physics Letters B

      Volume: 764 Pages: 163-166

    • DOI

      10.1016/j.physletb.2016.11.024

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Probing SUSY with 10 TeV stop mass in rare decays and CP violation of kaon2016

    • Author(s)
      Morimitsu Tanimoto, Kei Yamamoto
    • Journal Title

      PTEP

      Volume: 2016 Issue: 12 Pages: 123B02-123B02

    • DOI

      10.1093/ptep/ptw160

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Occam’s razor in lepton mass matrices: The sign of the universe’s baryon asymmetry2016

    • Author(s)
      Yuya Kaneta, Yusuke Shimizu, Morimitsu Tanimoto, Tutom T. Yanagida
    • Journal Title

      PTEP

      Volume: 2016 Issue: 6 Pages: 1-13

    • DOI

      10.1093/ptep/ptw079

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Occam's Razor in Quark Mass Matrices2016

    • Author(s)
      Morimitsu Tanimoto, Tsutomu T. Yanagida
    • Journal Title

      PTEP

      Volume: 2016 Issue: 4 Pages: 043B03-043B03

    • DOI

      10.1093/ptep/ptw024

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Sensitivity of High-Scale SUSY in Low Energy Hadronic FCNC2015

    • Author(s)
      Morimitsu Tanimoto, Kei Yamamoto
    • Journal Title

      Symmetry

      Volume: 7 Issue: 2 Pages: 689-713

    • DOI

      10.3390/sym7020689

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Testing the minimal S4 model of neutrinos with the Dirac and Majorana phases2015

    • Author(s)
      Yusuke Shimizu, Morimitsu Tanimoto
    • Journal Title

      JHEP

      Volume: 1512 Issue: 12 Pages: 132-132

    • DOI

      10.1007/jhep12(2015)132

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Towards minimal flavor model via CP violation2018

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      FLASY 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Modular Symmetry in Lepton Flavors2018

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      Corfu Workshop on Standard Model and Beyond
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] CP Theory I2018

    • Author(s)
      谷本盛光
    • Organizer
      第31回ニュートリノ研究会 (宇宙線研究所)
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Non-Abelian Discrete Groups and Neutrino Flavor Symmetry2018

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      PPAP2018 (Hiroshima University)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Flavour and CP symmetries/CP violation2017

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      Neutrino Institute: the quest for a new physics scale
    • Place of Presentation
      CERN, Geneva, Switzerland
    • Year and Date
      2017-03-28
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Introduction to discrete group theory and their application2017

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      Bethe Forum Discrete Symmetries (Bonn University)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Neutrino CP violation in the minimal seesaw model2017

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      Launch 17 (MPIK, Heidelberg)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 新物理間接探索2016

    • Author(s)
      谷本盛光
    • Organizer
      Flavor Physics Workshop 2016
    • Place of Presentation
      新潟市西蒲区岩室
    • Year and Date
      2016-10-28
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Neutrino Mass Matrix with Occam's Razor and the Sign of Universe's Baryon Asymmetry2016

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      FLASY2016
    • Place of Presentation
      Valparaiso, Chile
    • Year and Date
      2016-09-29
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Neutrino Mass Matrix and the Sign of Universe's Baryon Asymmetry2016

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      Corfu Summer Institute
    • Place of Presentation
      Corfu, Greece
    • Year and Date
      2016-09-10
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Neutrino CP violation connecting with quark unitarity triangle2015

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      5th workshop on flavour symmetries and consequences in accelerators and cosmology
    • Place of Presentation
      Manzanillo, Colima, Mexico
    • Year and Date
      2015-07-02
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Linking the leptonic CP violation to the quark unitarity triangle2015

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      25th International Workshop on Weak Interactions and Neutrinos
    • Place of Presentation
      Heidelberg, Germany
    • Year and Date
      2015-06-12
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Sensitivity of High-Scale SUSY in Low Energy Hadronic FCNC2015

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      25th International Workshop on Weak Interactions and Neutrinos
    • Place of Presentation
      Heidelberg, Germany
    • Year and Date
      2015-06-10
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2015-04-16   Modified: 2020-03-30  

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