Cosmology in the natural GUT

• Project/Area Number: 23540299
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nagoya University
• Principal Investigator: MAEKAWA Nobuhiro 名古屋大学, 基礎理論研究センター, 准教授 (40273429)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 大統一理論 / 超対称性 / 宇宙論 / 異常U(1)対称性 / 例外群 / バリオン生成 / ダークマター / 核子崩壊 / 微調整問題 / アノマリー媒介機構 / ヒッグジーノダークマター / 陽子崩壊 / 統一群 / 真空選択 / パラメータ共鳴 / LHC / ヒッグス粒子 / ミラージュ媒介機構 / 電弱スケールの不安定性 / 異常U(1) / インフレーション

Outline of Final Research Achievements

We proposed a new Baryogenesis mechanism in grand unified theories (GUT) via B-L generation. We estimated an averaged number of dark matter in the decay shower of superheavy particles. We showed analytically and numerically that vacuum selection by producing particles which have masses through non-renormalizable interactions is possible. We showed that O(100TeV) gravitino not
only solves the cosmological gravitino problem but also improves instability of the electro-weak scale. We showed that in the case, GUT can be proved by low energy experiments. We showed that we can identify the unification group by measuring the decay modes of nucleon.

Research Products

• [Journal Article] The heavy gravitino, naturalness, and sizable anomaly mediation (2014)
  • Author(s): N. Maekawa, K. Takayama
  • Journal Title: Prog. Thoer. Exp. Phys. Volume: 113B Issue: 9 Pages: 04-04
  • DOI: 10.1093/ptep/ptu118
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Sizable D-term contributions as a signature of the E6*SU(2)F*U(1)A SUSY GUT model (2014)
  • Author(s): N. Maekawa, Y. Muramatsu, Y. Shigekami
  • Journal Title: Prog. Theor. Exp. Phys. Volume: 113B Issue: 11 Pages: 02-02
  • DOI: 10.1093/ptep/ptu151
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Nucleon decay via dimension 6 operators in the E6*SU(2)F*U(1)A SUSY GUT model (2014)
  • Author(s): N. Maekawa, Y. Muramatsu
  • Journal Title: Prog. Theor. Exp. Phys. Volume: 113B Issue: 11 Pages: 03-03
  • DOI: 10.1093/ptep/ptu150
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Beauty is more attractive:particle production and moduli trapping with higher dimensional interaction (2014)
  • Author(s): Seishi Enomoto, Satoshi Iida, Nobuhiro Maekawa, Tomohiro Matsuda
  • Journal Title: JHEP Volume: 1401 Issue: 1 Pages: 141-141
  • DOI: 10.1007/jhep01(2014)141
  • Peer Reviewed / Open Access
• [Journal Article] Nucleon decay via dimension 6 operators in anomalous U(1)A SUSY GUT (2013)
  • Author(s): Nobuhiro Maekawa, Yu Muramatsu
  • Journal Title: Phys. Rev. D Volume: 88 Issue: 9 Pages: 95008-95008
  • DOI: 10.1103/physrevd.88.095008
  • Peer Reviewed
• [Journal Article] Neutrino properties in E6 x SU(2)F supersymmetric GUT with spontaneous CP violation (2012)
  • Author(s): Nobuhiro Maekawa, Kenichi Takayama
  • Journal Title: Physical Review D Volume: 85 Issue: 9 Pages: 95015-95027
  • DOI: 10.1103/physrevd.85.095015
  • Peer Reviewed
• [Journal Article] Natural GUT and the cosmology (2012)
  • Author(s): N. Maekawa
  • Journal Title: AIP Conf. Proc. Volume: 1467 Pages: 135-140
  • DOI: 10.1063/1.4742090
• [Journal Article] E6 grand unified theory with three generations from heterotic string (2011)
  • Author(s): M.Ito, S. Kuwakino, N. Maekawa, S. Moriyama, K. Takahashi, K. Takei, S. Teraguchi, T. Yamashita
  • Journal Title: Phys. Rev. D Volume: 83 Pages: 91703-91703
  • Peer Reviewed
• [Journal Article] Heterotic E6 GUT and Partition Functions (2011)
  • Author(s): M.Ito, S. Kuwakino, N. Maekawa, S. Moriyama, K. Takahashi, K. Takei, S. Teraguchi, T. Yamashita
  • Journal Title: Journal of High Energy Physics Volume: 1112 Pages: 100-100
  • Peer Reviewed
• [Journal Article] Baryogenesis by B-L generation due to superheavy particle decay (2011)
  • Author(s): S. Enomoto, N. Maekawa
  • Journal Title: Phys. Rev. D Volume: 84 Pages: 96007-96007
  • Peer Reviewed
• [Presentation] ニュートリノ、GUT、陽子崩壊 (2015)
  • Author(s): 前川展祐
  • Organizer: 物理学会
  • Place of Presentation: 早稲田大
  • Year and Date: 2015-03-21 – 2015-03-24
  • Invited
• [Presentation] 超対称E6大統一理論、LHCでどうなったか？ (2015)
  • Author(s): 前川展祐
  • Organizer: 素粒子の展望：80年代、90年代から未来へ
  • Place of Presentation: 大阪大
  • Year and Date: 2015-02-14
  • Invited
• [Presentation] Does heavy gravitino evade the naturalness problem in MSSM? (2014)
  • Author(s): 前川展祐
  • Organizer: テラスケール2014
  • Place of Presentation: 大阪大
  • Year and Date: 2014-11-29
  • Invited
• [Presentation] Heavy gravitino, naturalness and sizable anomaly mediation (2014)
  • Author(s): N. Maekawa
  • Organizer: Summer Institute2014
  • Place of Presentation: Fujiyoshida
  • Year and Date: 2014-08-21 – 2014-08-28
• [Presentation] Heavy gravitino, naturalness and sizable anomaly mediation (2014)
  • Author(s): N. Maekawa
  • Organizer: PASCOS2014
  • Place of Presentation: Warsaw, Poland
  • Year and Date: 2014-06-22 – 2014-06-27
• [Presentation] Neutrino properties in E6*SU(2)F SUSY GUT with spontaneous CP violation (2014)
  • Author(s): 前川展祐
  • Organizer: 次世代の加速器ニュートリノ実験ワークショップ
  • Place of Presentation: 京都大学
  • Year and Date: 2014-06-21 – 2014-06-22
  • Invited
• [Presentation] Vacuum selection and inflation via particle production in anomalous U(1) models (2013)
  • Author(s): 前川展祐
  • Organizer: PASCOS2013
  • Place of Presentation: Taipei, Taiwan
• [Presentation] Neutrino mixings in E6 GUT with spontaneous CP violation and comments on 125 GeV Higgs (2012)
  • Author(s): Nobuhiro Maekawa
  • Organizer: Summer Institute
  • Place of Presentation: Taiwan
• [Presentation] Spontaneous CP violation in E6 GUT, flavor (neutrino) physics, and 125 GeV Higgs (2012)
  • Author(s): Nobuhiro Maekawa
  • Organizer: Japanese-German Symposium
  • Place of Presentation: Kanazawa, Japan
  • Invited
• [Presentation] Natural GUT and the Cosmology (2012)
  • Author(s): N. Maekawa
  • Organizer: GUT2012(招待講演)
  • Place of Presentation: Kyoto, Japan
• [Presentation] Cosmology in Natural GUT (2011)
  • Author(s): N. Maekawa
  • Organizer: COSMO11
  • Place of Presentation: Porto, Portgese
• [Presentation] Origin of Kobayashi-Maskawa theory in E6 GUT with family symmetry (2011)
  • Author(s): N. Maekawa
  • Organizer: KMI Inanguration Conference on "Quest for the Origin of Particles and the Universe(招待講演)
  • Place of Presentation: Nagoya, Japan