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2022 年度 実績報告書

新たな対称性を伴うSU(5)大統一模型とその検証可能性について

研究課題

研究課題/領域番号 22J20755
配分区分補助金
研究機関東京大学

研究代表者

HOR ShihWen  東京大学, 理学系研究科, 特別研究員(DC1)

研究期間 (年度) 2022-04-22 – 2025-03-31
キーワードgrand unified theories / supersymmetry / Nambu-Goldstone Higgs / global symmetry
研究実績の概要

In this year, I have been working on Nambu-Goldstone (NG) Higgs grand unified theories (GUT) models. We studied supersymmetric (SUSY) SU(5) GUT model with a global SU(6) symmetry including SU(5) as a subgroup to explain Higgs as NG Higgs particles and to solve the doublet-triplet splitting problem. We used renormalization group equations to represent the GUT parameters by the SUSY parameters and calculated the proton decay with different soft-SUSY-breaking scenarios.
I am also doing another project about the calculation of proton decay using chiral perturbation theory. We are trying to use chiral perturbation theory to improve the results of proton decays for different channels. It could help to connect the experimental bounds to theoretical predictions to test GUT models.

現在までの達成度 (区分)
現在までの達成度 (区分)

2: おおむね順調に進展している

理由

I studied the minimal Nambu-Goldstone Higgs SUSY SU(5) GUT model as planed. I am starting to consider some more complicated NG Higgs SUSY GUT model.
I didn’t finished the SU(5) and the flipped SU(5) GUT models with additional symmetries as I planed.
However, I also got some ideas of new projects. I am thinking about the SU(6) GUT model with extra-dimension, which can be related to global SU(6) symmetry GUT model in four-dimension.
Besides, I am currently doing the calculations of three-body proton decay using chiral perturbation theory.

今後の研究の推進方策

First, I will continue the calculation of three-body proton decay by chiral perturbation theory.
Besides, I will study the SU(6) gauge extra-dimension GUT model and its connections to global SU(6) GUT model. In the model, there is a SU(6) gauge symmetry in the 5 dimension bulk, and it is broken into the standard model symmetry on one of the brane. I will also consider the model with axion as a NG boson in a similar way.
On the other hand, to extend my research areas, I will study Z’ portal dark matter model and the capture by compact stars.

  • 研究成果

    (5件)

すべて 2023 2022

すべて 雑誌論文 (1件) (うち国際共著 1件、 査読あり 1件、 オープンアクセス 1件) 学会発表 (4件) (うち国際学会 4件、 招待講演 1件)

  • [雑誌論文] Minimal Nambu-Goldstone-Higgs model in supersymmetric SU(5) revisited2023

    • 著者名/発表者名
      Hamaguchi Koichi、Hor Shihwen、Nagata Natsumi
    • 雑誌名

      Physical Review D

      巻: 107 ページ: 035016

    • DOI

      10.1103/PhysRevD.107.035016

    • 査読あり / オープンアクセス / 国際共著
  • [学会発表] Nambu-Goldstone Higgs Models in SU(5) GUT2023

    • 著者名/発表者名
      Shihwen Hor
    • 学会等名
      36th Regular Meeting of the New Higgs Working Group
    • 国際学会 / 招待講演
  • [学会発表] R-symmetric Flipped SU(5)2022

    • 著者名/発表者名
      Shihwen Hor
    • 学会等名
      Invisibles 2022 School
    • 国際学会
  • [学会発表] Nambu-Goldstone Higgs Models in SU(5)2022

    • 著者名/発表者名
      Shihwen Hor
    • 学会等名
      Summer Institute 2022
    • 国際学会
  • [学会発表] Nambu-Goldstone Higgs Models in SU(5)2022

    • 著者名/発表者名
      Shihwen Hor
    • 学会等名
      KEK Theory Meeting on Particle Physics Phenomenology 2022
    • 国際学会

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公開日: 2023-12-25  

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