Search for a Higgs boson decay into γ*γ→µµγ in pp collisions at √s = 13 TeV

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:	[Graduate Institute of Physics] Electronic Thesis & Dissertation

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