簡易檢索 / 詳目顯示

回結果列表
研究生： 林大維
Lin, Da-Wei
論文名稱： 新物理下由膠子生成的希格斯粒子
Higgs Production by Gluon Fusion in New Physics
指導教授： 陳傳仁
Chen, Chuan-Ren
學位類別： 碩士
Master
系所名稱： 物理學系
Department of Physics
論文出版年： 2016
畢業學年度： 104
語文別： 英文
論文頁數： 42
中文關鍵詞： 希格斯粒子 、新物理
英文關鍵詞： Higgs production, Gluon fusion
DOI URL： https://doi.org/10.6345/NTNU202203993
論文種類： 學術論文
相關次數： 點閱：108  下載：26 
分享至:
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報

    • 標準模型希格斯玻色子的存在是由歐洲核子研究中心的實驗證實，其質量發現是125 GeV的。其由主導膠子膠子融合通道生產橫截面可以通過利用低能量定理，這是有效的或超出標準模型可以容易地記錄下來。本文異國情調的費米子和標量來希格斯生產的影響考慮。在這些模型中，將有其它的用貢獻由費曼圖希格斯產幅度在其中的膠子 - 膠子融合過程中的頂夸克圈被這些外來顆粒循環取代。類似的斷言保持希格斯玻色子的兩個伽瑪衰變通道，通過該模型的預測可以檢查，如果數據改善未來的實驗。

    The existence of the Standard Model Higgs boson was verified by CERN experiments, with its mass found to be 125 GeV. Its production cross section by the dominant gluon-gluon fusion channel can be readily written down by making use of low-energy theorems, which are valid in or beyond the Stan- dard Model. In this thesis the effects of exotic fermions or scalars to Higgs productions are considered. In these models, there would be additional con- tributions to the Higgs production amplitude by Feynman diagrams in which the top quark loops in the gluon-gluon fusion process are replaced by these exotic particle loops. Similar assertions hold for the two gamma decay chan- nel of the Higgs boson, by means of which the predictions of the models can be checked, if statistics improves in future experiments.

    Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . ii 1 Introduction 2 2 The Lagrangian Formulation of Dynamical Systems 3 2.1 Hamilton’s Principle . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Continuous Systems . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Lorentz Covariant Field Theory . . . . . . . . . . . . . . . . . 5 2.4 Complex Scalar Field . . . . . . . . . . . . . . . . . . . . . . . 6 3 Spontaneous Symmetry Breaking 7 3.1 Spontaneous Breaking of Global Symmetries . . . . . . . . . . 8 3.2 Spontaneous Breaking of Local Symmetries . . . . . . . . . . . 10 4 Higgs Particle in the SM 12 4.1 The SM before Electroweak Symmetry Breaking . . . . . . . . 12 4.2 The Higgs Mechanism in the SM . . . . . . . . . . . . . . . . 15 5 Low Energy Theorem 19 6 Phenomenology 21 6.1 Higgs Production by Gluon-Gluon Fusion in SM . . . . . . . . 22 6.2 Low Energy Theorem in New Physics . . . . . . . . . . . . . . 23 7 Conclusion 37 8 Bliography 39 A Function A 41

    [1] Introduction to the Standard Model of Particle Physics, by W.
    N. Cottingham and D. A. Greenwood (ISBN 978-0-521-85249-4)
    [2] Djouadi, Abdelhak:The Anatomy of Electro-Weak Symmetry Breaking Tome I: The Higgs boso in the Standard Model, by Abdelhak Djouadi, arXiv:0503172v2
    [3] Mikhail A. Shifman, A.I. Vainshtein, M.B. Voloshin, Valentin I. Za- kharov:Low Energy Theorems for Higgs Boson Coupling to Pho- tons, Sov. J. Nucl. Phys. 30, 711(1979)
    [4] Sally Dawson, Howard E. Haber:A Primer on Higgs Boson Low- Energy Theorems, by Sally Dawson and Howard E. Haber, CONF- 8901127-2
    [5] Marcela Carena, Ian Low, and Carlos E. M. Wagner:Implications of a Modified Higgs to Diphoton Decay Width, arXiv:1206.1082
    [6] Bogdan A. Dobrescu, Graham D. Kribs and Adam Martin:Higgs Un- derproduction at the LHC, arXiv:1112.2208v2
    [7] Brian Batell, Stefania Gori, Lian-Tao Wang: Exploring the Higgs Por- tal with 10fb−1 at the LHC, arXiv:1112.5180v2
    [8] Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at √s = 7 and 8 TeV, ATLAS-CONF-2015-044.
    [9] Andy Buckley, James Ferrando, Stephen Lloyd, Karl Nordstrom, Ben Page, Martin Rufenacht, Marek Schonherr, Graeme Watt:LHAPDF6: parton density access in the LHC precision era, arXiv:1412.7420v2

    下載圖示
    QR CODE