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研究生: 羅雅丰
Lo, Ya-Feng
論文名稱: 希格斯粒子衰變至雙W玻色子之測量的背景分析
WW background estimation in the H →WW∗ → eνμν decay channel in pp collisions at √s = 13 TeV with the ATLAS detector
指導教授: 徐百嫻
Hsu, Pai-Hsien
口試委員: 史馬丁
Spinrath, Martin
張敬民
Cheung, Kingman
學位類別: 碩士
Master
系所名稱: 理學院 - 物理學系
Department of Physics
論文出版年: 2019
畢業學年度: 107
語文別: 英文
論文頁數: 79
中文關鍵詞: 高能物裡基本粒子玻色子希格斯粒子碰撞截面
外文關鍵詞: ATLAS, Higgs, CERN, gluon, boson
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  • 此篇論文將論述由ATLAS HWW小組所發表的第二次運轉的分析但會著重在 我在此小組有關WW背景分析的貢獻。我會呈現我們對膠子融合機制跟向量玻 色子融合機制碰撞截面的測量,此測量是在希格斯粒子衰變至雙W玻色子再 衰變為兩個微中子與一個電子與一個渺子的衰變模式下所完成的。此分析是 使用2015至2016所擷取的36.1fb−1的質子對質子碰撞數據,碰撞質心能量為13 TeV。


    This paper describes the publication from the run-2 analysis by the ATLAS HWW group but will focus on my contribution about the WW background estimation in the run-2 published paper. I will show the measurements of the inclusive cross- section of Higgs boson production via the gluon-gluon fusion (ggF) and vector- boson fusion (VBF) modes in the H → WW∗ → eνμν decay channel but mostly on the ggF production. They are based on 36.1 fb−1 of √s = 13 TeV proton-proton collisions recorded by the ATLAS detector at the LHC in 2015-2016.

    Contents 1 Introduction 2 H→WW∗Analysis 4 ATLAS detector and simulation 8 ggF and VBF signal region construction 21 WW background estimation 37 WW systematics uncertainty and statistics treatment 49 Fit results 64 Conclusion 67 Appendix 67 Reference 77

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