Gravitational waves as a new probe of models for particle physics

• Project Area: Gravitational wave physics and astronomy: Genesis
• Project/Area Number: 18H04587
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Research Institution: Osaka University
• Principal Investigator: 兼村 晋哉 大阪大学, 理学研究科, 教授 (10362609)
• Project Period (FY): 2018-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: ヒッグス粒子 / 電弱相転移 / 重力波 / 素粒子物理学 / 電弱対称性の自発的破れ / 拡張ヒッグス模型 / 重力波実験 / 重力波物理学 / 素粒子モデル / ヒッグス物理

Outline of Annual Research Achievements

本研究では、将来の重力波観測がヒッグスセクターの構造とその背後の物理を解明する為の手段となる全く新しい可能性を追究する。宇宙バリオン数生成問題を説明する有力シナリオである電弱バリオン数生成は、強い一次的電弱相転移を伴う標準理論から拡張されたヒッグスモデルを必要とする。初期宇宙に生じた強い一次的電弱相転移の「こだま」としての重力波を検出することで、電弱バリオン数生成を立証できるだけでなく、重力波スペクトルの詳細からヒッグスポテンシャルの構造を決定できる可能性がある。
２０１９年度は、２０１８年度に引き続いてヒッグスセクターが拡張された新物理モデルの電弱相転移の際に発生する重力波スペクトルを、将来の重力波観測を用いてモデル間の差異を検出することにより、ヒッグスセクターの構造解明に向けた理論研究を行った。標準理論を拡張した新しいニュートリノ質量生成モデルを考え、重力波を含む将来実験で総合的に検証する方法を研究した。また重力波実験と加速器実験のシナジーの研究の一環として、ヒッグス自己結合に対する新粒子の効果を初めて２ループレベルで計算した。ついで、１次的相転移由来の重力波スペクトルに対する２ループ補正の効果を研究した。さらに、強い電弱一次的相転移を引き起こす新物理モデルにおける電弱理論の非摂動解スファレロンの研究を行い、ヒッグス３点結合とスファレロンエネルギーの関係を明らかにすることによって、将来実験でヒッグス３点結合を測定することにより、スファレロンエネルギーを決定する可能性を初めて明らかにした。それらの新物理模型に基づいてスファレロンエネルギーと相転移の際に発生する重力波の相関関係を調べ、将来重力波観測によりスファレロンエネルギーを決定する可能性を調べた。将来の重力波観測と加速器実験でヒッグスセクターを立体的に検証する方法を研究した。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Institute for Basic Science(韓国)
• [Int'l Joint Research] Weizmann Institute of Science(イスラエル)
• [Int'l Joint Research] Karlsruhe Institute of Technology(ドイツ)
• [Int'l Joint Research] ICTP (Trieste)(イタリア)
• [Int'l Joint Research] Korea Institute for Advanced Study(韓国)
• [Int'l Joint Research] United Arab Emirates University(アラブ首長国連邦)
• [Int'l Joint Research] Institute for Basic Science(韓国)
• [Int'l Joint Research] Weizmann Institute of Science(イスラエル)
• [Journal Article] Leading two-loop corrections to the Higgs boson self-couplings in models with extended scalar sectors (2019)
  • Author(s): Johannes Braathen, Shinya Kanemura
  • Journal Title: European Physical Journal C Volume: 80 Issue: 3 Pages: 227-227
  • DOI: 10.1140/epjc/s10052-020-7723-2
  • Peer Reviewed / Open Access
• [Journal Article] Full next-to-leading-order calculations of Higgs boson decay rates in models with non-minimal scalar sectors (2019)
  • Author(s): Kanemura Shinya、Kikuchi Mariko、Mawatari Kentarou、Sakurai Kodai、Yagyu Kei
  • Journal Title: Nuclear Physics B Volume: 949 Pages: 114791-114791
  • DOI: 10.1016/j.nuclphysb.2019.114791
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Exploring the global symmetry structure of the Higgs potential via same-sign pair production of charged Higgs bosons (2019)
  • Author(s): Aiko Masashi、Kanemura Shinya、Mawatari Kentarou
  • Journal Title: Physics Letters B Volume: 797 Pages: 134854-134854
  • DOI: 10.1016/j.physletb.2019.134854
  • Peer Reviewed / Open Access
• [Journal Article] New model for radiatively generated Dirac neutrino masses and lepton flavor violating decays of the Higgs boson (2019)
  • Author(s): Enomoto Kazuki、Kanemura Shinya、Sakurai Kodai、Sugiyama Hiroaki
  • Journal Title: Physical Review D Volume: 100 Issue: 1 Pages: 015044-015044
  • DOI: 10.1103/physrevd.100.015044
  • Peer Reviewed / Open Access
• [Journal Article] On two-loop corrections to the Higgs trilinear coupling in models with ex- tended scalar sectors (2019)
  • Author(s): Johannes Braathen, Shinya Kanemura
  • Journal Title: Physics Letters B Volume: 796 Pages: 38-46
  • DOI: 10.1016/j.physletb.2019.07.021
  • Peer Reviewed / Open Access
• [Journal Article] Selecting models of first-order phase transitions using the synergy between collider and gravitational-wave experiments (2019)
  • Author(s): Hashino Katsuya、Jinno Ryusuke、Kakizaki Mitsuru、Kanemura Shinya、Takahashi Tomo、Takimoto Masahiro
  • Journal Title: Physical Review D Volume: 99 Issue: 7 Pages: 075011-075011
  • DOI: 10.1103/physrevd.99.075011
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Probing CP violating Higgs sectors via the precision measurement of coupling constants (2019)
  • Author(s): Mayumi Aoki, Katsuya Hashino, Daiki Kaneko, Shinya Kanemura, Mitsunori Kubota
  • Journal Title: PTEP Volume: 5 Issue: 5 Pages: 1-12
  • DOI: 10.1093/ptep/ptz038
  • Peer Reviewed / Open Access
• [Journal Article] Single Higgs production in association with a photon at electron-positron colliders in extended Higgs models (2019)
  • Author(s): Kanemura Shinya、Mawatari Kentarou、Sakurai Kodai
  • Journal Title: Physical Review D Volume: 99 Issue: 3 Pages: 035023-035023
  • DOI: 10.1103/physrevd.99.035023
  • Peer Reviewed / Open Access
• [Journal Article] Gravitational waves from phase transitions in models with charged singlets (2019)
  • Author(s): Ahriche Amine、Hashino Katsuya、Kanemura Shinya、Nasri Salah
  • Journal Title: Physics Letters B Volume: 789 Pages: 119-126
  • DOI: 10.1016/j.physletb.2018.12.013
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] KAGRA: 2.5 generation interferometric gravitational wave detector (2019)
  • Author(s): KAGRA collaboration
  • Journal Title: Nature Astronomy Volume: 3 Issue: 1 Pages: 35-40
  • DOI: 10.1038/s41550-018-0658-y
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Vibration isolation system with a compact damping system for power recycling mirrors of KAGRA (2019)
  • Author(s): KAGRA Collaboration
  • Journal Title: Classical and Quantum Gravity Volume: 36 Issue: 9 Pages: 95015-95015
  • DOI: 10.1088/1361-6382/ab0fcb
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] H-COUP: A program for one-loop corrected Higgs boson couplings in non-minimal Higgs sectors (2018)
  • Author(s): Kanemura Shinya、Kikuchi Mariko、Sakurai Kodai、Yagyu Kei
  • Journal Title: Computer Physics Communications Volume: 233 Pages: 134-144
  • DOI: 10.1016/j.cpc.2018.06.012
  • Peer Reviewed
• [Journal Article] Gravitational waves from first order electroweak phase transition in models with the U(1)X gauge symmetry (2018)
  • Author(s): Hashino Katsuya、Kakizaki Mitsuru、Kanemura Shinya、Ko Pyungwon、Matsui Toshinori
  • Journal Title: Journal of High Energy Physics Volume: 2018 Issue: 6 Pages: 088-088
  • DOI: 10.1007/jhep06(2018)088
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Loop effects on the Higgs decay widths in extended Higgs models (2018)
  • Author(s): Kanemura Shinya、Kikuchi Mariko、Mawatari Kentarou、Sakurai Kodai、Yagyu Kei
  • Journal Title: Physics Letters B Volume: 783 Pages: 140-149
  • DOI: 10.1016/j.physletb.2018.06.035
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Probing the Higgs sector using the synergy of future experiments (2019)
  • Author(s): Shinya Kanemura
  • Organizer: KIT-NEP ’19 (Karlsruhe Institute of Technology, October 7-9, 2019 参加者数約60 名), ドイツ
  • Int'l Joint Research / Invited
• [Presentation] Classification for models for radiative neutrino masses and Higgs LFV decays (2019)
  • Author(s): Shinya Kanemura
  • Organizer: ntensity Frontier in Particle Physics, Flavor, CP Violation and Dark Physics (NTU Taipei and NCTS Hsinchu, 3-6 October 2019, 参加者数約60名) 台湾
  • Int'l Joint Research / Invited
• [Presentation] New Model for Radiative Neutrino Masses and Higgs LFV Decays (2019)
  • Author(s): Shinya Kanemura
  • Organizer: First Mediterranean Conference on Higgs Physics (Tangier, September 23-27, 2019, 参加者数約80名) モロッコ
  • Int'l Joint Research / Invited
• [Presentation] Probing the shape of the Higgs sector using the synergy of future experiments (2019)
  • Author(s): Shinya Kanemura
  • Organizer: Scalars 2019 (Warsaw, September 11-14, 2019, 参加者数約100名) ポーランド
  • Int'l Joint Research / Invited
• [Presentation] Probing the Higgs sector at ILC and synergy with other experiments (2019)
  • Author(s): Shinya Kanemura
  • Organizer: The IFT Workshop “Opportunities at Future High Energy Colliders”(July 1-5, 2019, 参加者数約50名) スペイン
  • Int'l Joint Research / Invited
• [Presentation] Same-sign pair produc1on of charged Higgs bosons at hadron colliders (2019)
  • Author(s): Shinya Kanemura
  • Organizer: Helsinki RISE Whorkshop (U. of Helsinki, June 27-29, 2019, 参加者数約80名) フィンランド
  • Int'l Joint Research / Invited
• [Presentation] Summary of HPNP2019 (2019)
  • Author(s): Shinya Kanemura
  • Organizer: HPNP2019
  • Int'l Joint Research
• [Presentation] Highlight and Vision, Physics (2018)
  • Author(s): Shinya Kanemura
  • Organizer: ALCW2018
  • Int'l Joint Research / Invited
• [Presentation] Electroweak and Higgs Physics (2018)
  • Author(s): Shinya Kanemura
  • Organizer: First International High Energy Physics School in Western China
  • Int'l Joint Research / Invited
• [Presentation] Synergy of collider and gravita1onal waves to explore the Higgs sector (2018)
  • Author(s): Shinya Kanemura
  • Organizer: Multi-Higgs Models 2018
  • Int'l Joint Research / Invited
• [Presentation] Gravitational waves as a probe of Higgs sector == Synergy with collider experiments == (2018)
  • Author(s): Shinya Kanemura
  • Organizer: Gravitational wave physics and astronomy: Genesis
  • Int'l Joint Research / Invited
• [Funded Workshop] 25th Regukar Meeting of New Higgs Working Group (2019)
• [Funded Workshop] 26th Regukar Meeting of New Higgs Working Group (2019)
• [Funded Workshop] 27th Regukar Meeting of New Higgs Working Group (2019)
• [Funded Workshop] Higgs as a Probe of New Physics (HPNP2019) (2019)