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Probe of the Higgs sector by precise calcurations of the light new scalar particles

Research Project

Project/Area Number 21K20363
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0203:Particle-, nuclear-, astro-physics, and related fields
Research InstitutionTohoku University

Principal Investigator

Kodai Sakurai  東北大学, 理学研究科, 特任助教 (70910256)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords軽いスカラー暗黒物質 / 付加的ヒッグス粒子 / ヒッグスセクター / 量子補正 / 拡張ヒッグスセクター / ヒッグスボソンの暗黒物質への崩壊 / 荷電ヒッグス粒子の崩壊分岐比 / 輻射補正 / 精密計算 / 軽いスカラー新粒子
Outline of Research at the Start

標準理論を超えた新物理を明らかにする鍵はヒッグスセクターにあると考えられる。本研究は様々な標準理論から拡張されたヒッグスセクターを持つ理論の軽いスカラー新粒子を予言するシナリオに注目する。本研究で扱う理論は、軽いスカラー新粒子が暗黒物質であるシナリオやCP-oddヒッグスボソンであるシナリオを含む。軽い新粒子に関連した物理量やヒッグスセクターの構造に直結するヒッグスボソンに関連した物理量に対する精密理論計算を行い、それらの理論予言に対する量子効果を通じてヒッグスセクターの詳細や軽い新粒子の性質を明らかにすることを目指す。

Outline of Final Research Achievements

We focus on various models with light scalar dark matter (DM) and additional Higgs bosons. First, we consider the scenario where the light scalar DM strongly couples with the 125 GeV Higgs boson and additional Higgs bosons. We show that this scenario can be probed by the DM production process induced by the strong couplings at future Lepton colliders. In addition, this model with light scalar DM can alleviate the anomaly in the W boson mass measurement reported in CDF II experiment. Model prediction for deviation in W boson mass from the SM prediction can be 5 MeV at the most. Second, we demonstrate that the scale of the additional Higgs bosons can be fixed if the light DM is detected in future experiments. Finally, we clarify the theoretical behavior of quantum corrections for additional Higgs boson decays and the Higgs boson invisible decay.

Academic Significance and Societal Importance of the Research Achievements

学術的意義は、以下二つの点を明らかにした事である。(1):
軽いスカラー暗黒物質を探索する上で付加的ヒッグス粒子の影響は、その質量スペクラムによらず重要であること(軽い場合は付加的ヒッグス粒子の崩壊が重要になり、重い場合は量子補正を通じて125GeVヒッグス粒子の崩壊に影響する。)。(2): 軽いスカラー暗黒物質が発見されれば、付加的ヒッグス粒子との関連性によりヒッグスセクターの構造解明に迫り得ること。
本研究で得られた理論的帰結を検証するためには、素粒子現象を超高精度で測定出来る新たな加速器が必要である。社会的意義は、この様な最先端の加速器を作る上で様々な産業技術の発展が期待される点である。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (25 results)

All 2023 2022 2021

All Journal Article (7 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 7 results,  Open Access: 7 results) Presentation (18 results) (of which Int'l Joint Research: 9 results)

  • [Journal Article] Radiative corrections to decay branching ratios of the CP-odd Higgs boson in two Higgs doublet models2023

    • Author(s)
      Masashi Aiko, Shinya Kanemura, Kodai Sakurai
    • Journal Title

      Nuclear Physics B

      Volume: 986 Pages: 116047-116047

    • DOI

      10.1016/j.nuclphysb.2022.116047

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Probing a light dark sector at future lepton colliders via invisible decays of the SM-like and dark Higgs bosons2023

    • Author(s)
      Haghighat Gholamhossein、Mohammadi Najafabadi Mojtaba、Sakurai Kodai、Yin Wen
    • Journal Title

      Physical Review D

      Volume: 107 Issue: 3 Pages: 1-1

    • DOI

      10.1103/physrevd.107.035033

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Phenomenology of CP-even ALP2022

    • Author(s)
      Sakurai Kodai、Yin Wen
    • Journal Title

      Journal of High Energy Physics

      Volume: 2022 Issue: 4 Pages: 1-1

    • DOI

      10.1007/jhep04(2022)113

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications2022

    • Author(s)
      Sakurai Kodai、Takahashi Fuminobu
    • Journal Title

      Journal of High Energy Physics

      Volume: 2022 Issue: 7 Pages: 124-124

    • DOI

      10.1007/jhep07(2022)124

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Singlet extensions and W boson mass in light of the CDF II result2022

    • Author(s)
      Sakurai Kodai、Takahashi Fuminobu、Yin Wen
    • Journal Title

      Physics Letters B

      Volume: 833 Pages: 137324-137324

    • DOI

      10.1016/j.physletb.2022.137324

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] One-loop corrections to the Higgs boson invisible decay in the dark doublet phase of the N2HDM2021

    • Author(s)
      Azevedo Duarte、Gabriel Pedro、Muhlleitner Margarete、Sakurai Kodai、Santos Rui
    • Journal Title

      Journal of High Energy Physics

      Volume: 2021 Issue: 10 Pages: 1-33

    • DOI

      10.1007/jhep10(2021)044

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Radiative corrections to decays of charged Higgs bosons in two Higgs doublet models2021

    • Author(s)
      Aiko Masashi、Kanemura Shinya、Sakurai Kodai
    • Journal Title

      Nuclear Physics B

      Volume: 973 Pages: 1-57

    • DOI

      10.1016/j.nuclphysb.2021.115581

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Probing light dark sector by invisible decays of dark and SM-like Higgs bosons at the ILC2023

    • Author(s)
      桜井 亘大
    • Organizer
      ILC IDT-WG3 physics working group
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Probe of ALP DM by invisible decays of SM-like and dark Higgs bosons at ILC2023

    • Author(s)
      桜井 亘大
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] CDF II result in the singlet extension of the SM2022

    • Author(s)
      桜井 亘大
    • Organizer
      33rd New Higgs Working Group Reglular meeting
    • Related Report
      2022 Annual Research Report
  • [Presentation] Phenomenological implications of anomaly-free axion for 3HDM2022

    • Author(s)
      桜井 亘大
    • Organizer
      Physics in LHC and Beyond
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phenomenological impact of anomaly-free axion in three Higgs doublet model2022

    • Author(s)
      桜井 亘大
    • Organizer
      PASCOSS2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A relation between extra Higgs bosons and anomaly-free axion in 3HDM2022

    • Author(s)
      桜井 亘大
    • Organizer
      multi Higgs workshop 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Anomaly-free axion in three Higgs doublet model2022

    • Author(s)
      桜井 亘大
    • Organizer
      34th New Higgs Working Group Reglular meeting
    • Related Report
      2022 Annual Research Report
  • [Presentation] 拡張ヒッグス模型におけるanomaly-free axionの現象論2022

    • Author(s)
      桜井 亘大
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Testability of CP-even ALP at ILC2022

    • Author(s)
      桜井亘大
    • Organizer
      Mini-workshop on BSM at ILC
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] CP-evenスカラーの結合を持つアクシオン的粒子の検証2022

    • Author(s)
      桜井亘大
    • Organizer
      第77回日本物理学会年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] NLO corrections to the Higgs boson invisible decay in N2HDM2021

    • Author(s)
      桜井亘大
    • Organizer
      新ヒッグス勉強会第30回定例会
    • Related Report
      2021 Research-status Report
  • [Presentation] Full NLO corrections to charged Higgs boson decays in the NMSSM2021

    • Author(s)
      桜井亘大
    • Organizer
      SUSY2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Charged Higgs boson decays with NLO corrections in the NMSSM2021

    • Author(s)
      桜井亘大
    • Organizer
      Charged Higgs Online workshop
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Impact of NLO corrections to the Higgs boson invisible decay in N2HDM2021

    • Author(s)
      桜井亘大
    • Organizer
      LHC Higgs Working Group WG3 (BSM) - Extended Higgs Sector subgroup meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Probing the Higgs sector by precise calculation of the Higgs invisible decay2021

    • Author(s)
      桜井亘大
    • Organizer
      素粒子物理学の進展2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Precise calculation of charged Higgs boson decays in two Higgs doublet models2021

    • Author(s)
      桜井亘大
    • Organizer
      ILC 夏の合宿 2021
    • Related Report
      2021 Research-status Report
  • [Presentation] ヒッグスボソンのインビジブル崩壊に対する輻射補正2021

    • Author(s)
      桜井亘大
    • Organizer
      日本物理学会秋季大会 2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Charged Higgs boson decays with NLO corrections in two Higgs doublet models2021

    • Author(s)
      桜井亘大
    • Organizer
      ILCX2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-10-22   Modified: 2024-01-30  

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