アナーキーと陽子崩壊

• Project Area: Unification and Development of the Neutrino Science Frontier
• Project/Area Number: 26105507
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: The University of Tokyo
• Principal Investigator: 村山 斉 東京大学, カブリ数物連携宇宙研究機構, 特任教授 (20222341)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Discontinued (Fiscal Year 2015)
• Budget Amount: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 宇宙物理 / 素粒子論 / 素粒子実験

Outline of Annual Research Achievements

H２７年度は、H２６年度に発見したアナーキー理論の固有値への拡張を行い、レプトジェネシスがアナーキー理論と非常に整合性が高く、宇宙の物質・反物質非対称性を自然に説明できることを、定量的に示した。一方残念ながら、ニュートリノ振動で測定できる CP の破れと、レプトジェネシスに必要な CP の破れには相関が全くないこともはっきりした。ニュートリノ振動実験は、レプトジェネシスの「状況証拠」にはなりうるが、「直接証拠」にはなり得ないことがわかる。また、宇宙論からのニュートリノの質量和についての制限、ニュートリノのない二重β崩壊からのマヨラナ性への制限とは深い相関があり、今後の実験の結果が重要であることもはっきりした。
また、H２７年度の研究計画として提案した通り、新しい超対称性の破れの伝達機構をまず発表し、今まで問題であった軽いグラビティーノの質量の上限と、LHC 実験からの超対称性の破れのスケールの下限を整合させることができた。これで今後の陽子崩壊の探索での寿命と分岐比を研究できるところまで来ている。しかし年度途中で廃止となったため、陽子崩壊の研究を完成させるところまではできなかった。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Low-energy Supersymmetry Breaking Without the Gravitino Problem (2015)
  • Author(s): Anson Hook, Hitoshi Murayama
  • Journal Title: Physical Review D Volume: 92 Issue: 1 Pages: 015004-015004
  • DOI: 10.1103/physrevd.92.015004
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Low-energy Supersymmetry Breaking Without the Gravitino Problem (2015)
  • Author(s): Anson Hook, Hitoshi Murayama
  • Journal Title: Physical Review Letters Volume: -
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] How to use the Standard Model effective field theory (2015)
  • Author(s): Brian Henning, Xiaochuan Lu, Hitoshi Murayama
  • Journal Title: Physical Review D Volume: -
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] The SIMPlest Miracle (2015)
  • Author(s): Yonit Hochberg , Eric Kuflik , Hitoshi Murayama , Tomer Volansky , Jay G. Wacker
  • Journal Title: Physical Review Letters Volume: -
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Eigenvalue Distribution of Large N Random Matrix--- A Direct Diagrammatic Proof to Marchenko-Pastur Law --- (2015)
  • Author(s): Xiaochuan Lu, Hitoshi Murayama
  • Journal Title: Communications for Mathematics and Physics Volume: -
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] A keV String Axion from High Scale Supersymmetry (2015)
  • Author(s): Brian Henning, John Kehayias, Hitoshi Murayama, David Pinner, Tsutomu T. Yanagida
  • Journal Title: Phys.Rev. Volume: D91 Issue: 4 Pages: 11-11
  • DOI: 10.1103/physrevd.91.045036
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Review of Particle Physics (2014)
  • Author(s): Particle Data Group Collaboration
  • Journal Title: Chin.Phys. Volume: C38 Issue: 9 Pages: 1676-1676
  • DOI: 10.1088/1674-1137/38/9/090001
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] A compact ultra-clean system for deploying radioactive sources inside the KamLAND detector (2014)
  • Author(s): T.I. Banks, S.J. Freedman, J. Wallig, N. Ybarrolaza, A. Gando, Y. Gando , H. Ikeda, K. Inoue, Y. Kishimoto, M. Koga et al.
  • Journal Title: Nucl.Instrum.Meth. Volume: A769 Pages: 8-8
  • DOI: 10.1016/j.nima.2014.09.068
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Spontaneously broken non-Abelian gauge symmetries in nonrelativistic systems (2014)
  • Author(s): Haruki Watanabe, Hitoshi Murayama
  • Journal Title: Phys.Rev. Volume: D90 Issue: 12 Pages: 6-6
  • DOI: 10.1103/physrevd.90.121703
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Sneutrino Chaotic Inflation and Landscape (2014)
  • Author(s): Hitoshi Murayama, Kazunori Nakayama, Fuminobu Takahashi, Tsutomu T. Yanagida
  • Journal Title: Phys.Lett. Volume: B738 Pages: 4-4
  • DOI: 10.1016/j.physletb.2014.09.045
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] Particle physics vision (2015)
  • Author(s): 村山斉
  • Organizer: ILC Simmer
  • Place of Presentation: 伊香保、群馬
  • Year and Date: 2015-07-20
  • Invited
• [Presentation] BSM review (2015)
  • Author(s): 村山斉
  • Organizer: Invisibles workshop 2015
  • Place of Presentation: Instituto de Fisica Teorica, Madrid, Spain
  • Year and Date: 2015-06-22
  • Invited
• [Presentation] Dark Matter Theory (2015)
  • Author(s): 村山斉
  • Organizer: Gordon Research Conference on ”String Theory & Cosmology
  • Place of Presentation: 香港科技大学、香港
  • Year and Date: 2015-06-03
  • Invited
• [Presentation] Overview (2015)
  • Author(s): 村山斉
  • Organizer: AdS/CMT Workshop
  • Place of Presentation: 東京大学
  • Year and Date: 2015-05-26
  • Invited
• [Presentation] Proposal of two new paradigms: low-energy “vector mediation” of SUSY breaking, and dark matter as Strongly Interactive Massive Particles (2015)
  • Author(s): 村山斉
  • Organizer: Oxford Theoretical Physics seminar
  • Place of Presentation: Oxford University, Oxford, UK
  • Year and Date: 2015-05-06
  • Invited
• [Presentation] Life after Higgs: new SUSY breaking and new dark matter (2015)
  • Author(s): 村山斉
  • Organizer: Key Aspects in Exploring Road to Unification
  • Place of Presentation: Kavli IPMU, 千葉
  • Year and Date: 2015-03-25 – 2015-03-26
  • Invited
• [Presentation] 素粒子で解き明かす宇宙の歴史 (2015)
  • Author(s): 村山斉
  • Organizer: Higgs as a Probe of New Physics 2015 (HPNP2015)
  • Place of Presentation: 富山大学
  • Year and Date: 2015-02-11 – 2015-02-15
  • Invited
• [Presentation] ILC (2015)
  • Author(s): 村山斉
  • Organizer: Exploring the Physics Frontier with Circular Colliders
  • Place of Presentation: Aspen Center For Physics, Colorado, USA
  • Year and Date: 2015-01-26 – 2015-02-01
  • Invited
• [Presentation] Power of Precision Higgs Measurements on Hierarchy Problem and Baryogenesis (2014)
  • Author(s): 村山斉
  • Organizer: HEFT2014 - Higgs Effective Field Theories
  • Place of Presentation: Instituto de Fisica Teorica, Madrid, Spein
  • Year and Date: 2014-09-28 – 2014-09-30
  • Invited
• [Presentation] Higgs and Goldstone bosons with and without Lorentz invariance (2014)
  • Author(s): 村山斉
  • Organizer: Higgs Modes in Condensed Matter and Quantum Gases
  • Place of Presentation: 京都大学基礎物理学研究所
  • Year and Date: 2014-06-23 – 2014-06-25
  • Invited
• [Presentation] Particle and Nuclear Physics (2014)
  • Author(s): 村山斉
  • Organizer: the 2nd International Symposium on Science at J-PARC (J-PARC 2014)
  • Place of Presentation: EPOCHAL TSUKUBA、茨城県
  • Year and Date: 2014-06-12 – 2014-06-15
  • Invited
• [Presentation] The Quantum Universe (2014)
  • Author(s): 村山斉
  • Organizer: The Fermilab Annual Users Meeting
  • Place of Presentation: Fermilb, Illinois,USA
  • Year and Date: 2014-06-11 – 2014-06-12
  • Invited
• [Presentation] What’s wrong with Goldstone? (2014)
  • Author(s): 村山斉
  • Organizer: Low Energy Challenges for High Energy Physicists
  • Place of Presentation: Perimeter Institute, Ontario, Canada
  • Year and Date: 2014-05-26 – 2014-05-30
  • Invited
• [Presentation] What’s wrong with Goldstone? (2014)
  • Author(s): 村山斉
  • Organizer: 大阪大学物理学専攻セミナー
  • Place of Presentation: 大阪大学
  • Year and Date: 2014-05-22
  • Invited
• [Presentation] 磁石からヒッグス粒子まで (2014)
  • Author(s): 村山斉
  • Organizer: 南部コロキウム
  • Place of Presentation: 大阪大学
  • Year and Date: 2014-05-22
  • Invited
• [Presentation] Generalized Goldstone theorem (2014)
  • Author(s): 村山斉
  • Organizer: String Duality Seminar
  • Place of Presentation: Harvard University, Massachusetts, USA
  • Year and Date: 2014-05-08
  • Invited
• [Presentation] The Quantum Universe (2014)
  • Author(s): 村山斉
  • Organizer: The Rosseland Lecture 2014
  • Place of Presentation: the University of Oslo, Oslo, Norway
  • Year and Date: 2014-05-06
  • Invited
• [Book] 宇宙を創る実験 (2014)
  • Author(s): 村山斉
  • Total Pages: 253
  • Publisher: 集英社新書
• [Remarks] Hitoshi Murayama
  • URL: http://www.ipmu.jp/hitoshi-murayama
• [Remarks] Hitoshi Murayama
  • URL: http://hitoshi.berkeley.edu/
• [Remarks] 村山斉
  • URL: http://www.ipmu.jp/ja/hitoshi-murayama
• [Remarks] Hitoshi Murayama
  • URL: http://physics.berkeley.edu/people/faculty/hitoshi-murayama