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スケール不変なU(1)ゲージ拡張された標準模型とその現象論
https://doi.org/10.15102/1394.00000258
https://doi.org/10.15102/1394.00000258114b8f7c-c8ea-4373-90c4-d9a88c5512f8
名前 / ファイル | ライセンス | アクション |
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Item type | 学位論文 / Thesis or Dissertation(1) | |||||||
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公開日 | 2018-02-21 | |||||||
タイトル | ||||||||
タイトル | スケール不変なU(1)ゲージ拡張された標準模型とその現象論 | |||||||
言語 | ja | |||||||
タイトル | ||||||||
タイトル | Minimal Gauged U(1) Extension of the Standard Model with Classical Scale Invariance and Phenomenology | |||||||
言語 | en | |||||||
言語 | ||||||||
言語 | eng | |||||||
資源タイプ | ||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
資源タイプ | doctoral thesis | |||||||
ID登録 | ||||||||
ID登録 | 10.15102/1394.00000258 | |||||||
ID登録タイプ | JaLC | |||||||
アクセス権 | ||||||||
アクセス権 | open access | |||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
著者 |
高橋, 大介
× 高橋, 大介
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著者 (英) |
Takahashi, Daisuke
× Takahashi, Daisuke
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抄録 | ||||||||
内容記述タイプ | Other | |||||||
内容記述 | Although the Standard Model (SM) is the best theory in describing phenomena among elementary particles, it suffers from several problems, such as the gauge hierarchy problem, origin of the electroweak symmetry breaking, non-zero neutrino mass, and no candidate of dark matter. For solving these problems, we consider minimal U(1) extension of the SM with the classically conformal invariance, where an anomaly-free U(1) gauge symmetry is introduced along with a U(1) Higgs field and three righthanded neutrinos (RHNs) for the seesaw mechanism generating neutrino masses. With no mass term allowed by the classically conformal invariance, the U(1) gauge symmetry is broken through the Coleman-Weinberg mechanism, which subsequently triggers the electroweak symmetry breaking. We perform parameter scan and identify regions resolving the SM Higgs vacuum instability, while satisfying the LHC Run-2 bound on the U(1) gauge boson production and the naturalness constraint. We also investigate cosmological aspects of the model. Introducing Z2 parity, one RHN being an unique parity-odd particle in the model serves as dark matter. A successful inflation scenario is possible by identifying the U(1) Higgs boson with inflaton and introducing its non-minimal gravitational coupling. Interestingly, the LHC physics and cosmological observations are complementary narrowing down the model parameter space. | |||||||
口頭試問日 | ||||||||
値 | 2018-01-29 | |||||||
学位授与年月日 | ||||||||
学位授与年月日 | 2018-02-21 | |||||||
学位名 | ||||||||
学位名 | Doctor of Philosophy | |||||||
学位授与番号 | ||||||||
学位授与番号 | 甲第14号 | |||||||
学位授与機関 | ||||||||
学位授与機関識別子Scheme | kakenhi | |||||||
学位授与機関識別子 | 38005 | |||||||
学位授与機関名 | Okinawa Institute of Science and Technology Graduate University | |||||||
著者版フラグ | ||||||||
出版タイプ | VoR | |||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
権利 | ||||||||
権利情報 | © 2018 The Author |