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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/77103


    Title: Search for a Higgs boson decay into γ*γ→µµγ in pp collisions at √s = 13 TeV
    Authors: 林舒芳;Quilatan, Victoria Louise
    Contributors: 物理學系
    Keywords: 希格斯玻色子;渺子;緊湊渺子線圈;大強子對撞機;Higgs;Dalitz;CMS;13 TeV;Large Hadron Collider;rare decay
    Date: 2018-07-20
    Issue Date: 2018-08-31 13:57:16 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本篇論文研究希格斯玻色子衰變為一個光子和一個虛光子,其中虛光子再衰變為正負渺子對。此分析使用從質子-質子對撞,質心能量於13兆電子伏特,且於大強子對撞機之緊湊渺子線圈偵測器所記錄的數據,使用數據量則對應於綜合亮度35.9fb-1。研究結果顯示,在重建希格斯粒子的質量範圍120到130十億電子伏特區間內,沒有超出背景預期的訊號產生。在雙渺子重建質量低於50十億電子伏特的條件,及95%的信心水平下,希格斯玻色子生產橫截面的實際觀察(預測)訊號強度上限為標準模型預測值的1.44(2.15)和4.04(2.26)倍之間。;A search for a Higgs boson decay into a real and a virtual photon, where the virtual photon internally converts into muons, H → γ∗γ → µµγ, is described. The analysis uses data collected from proton-proton collisions with a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9fb−1. No excess above background has been found for the three-body invariant mass range 120 < mµµγ < 130. Limits have been derived for the Higgs Boson production cross section, where the dilepton invariant mass is below 50 GeV. The observed(expected) exclusion limits at 95% confidence level (CL) are between 1.44(2.15) and 4.04(2.26) times the standard model value.
    Appears in Collections:[物理研究所] 博碩士論文

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