| 研究課題/領域番号 |
22KJ1022
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| 補助金の研究課題番号 |
22J20755 (2022)
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 基金 (2023)
補助金 (2022) |
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| 応募区分 | 国内 |
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| 審査区分 |
小区分15010:素粒子、原子核、宇宙線および宇宙物理に関連する理論
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| 研究機関 | 東京大学 |
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研究代表者 |
HOR ShihWen 東京大学, 理学系研究科, 特別研究員(DC1)
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| 研究期間 (年度) |
2023-03-08 – 2025-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
2,500千円 (直接経費: 2,500千円)
2024年度: 800千円 (直接経費: 800千円)
2023年度: 800千円 (直接経費: 800千円)
2022年度: 900千円 (直接経費: 900千円)
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| キーワード | grand unified theories / supersymmetry / Nambu-Goldstone Higgs / global symmetry |
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| 研究開始時の研究の概要 |
I will construct an extra dimension GUT model with SU(6) bulk symmetry, which is broken into SU(5) symmetry on one of the branes. In the model, Higgs is part of the fifth-dimension gauge fields. It corresponds to a 4-dimension SU(5) GUT model with a global SU(6) symmetry, and Higgs as an NG boson.
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| 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.
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| 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.
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| 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.
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