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  • 學位論文

利用ATLAS 偵測器 探討希格斯玻色子衰變成一對W 玻色子之下的 Drell-Yan 背景分析

Drell-Yan Background estimation in the H → WW* → lvlv channel with the ATLAS detector

指導教授 : 徐百嫻

摘要


我們探討大強子對撞機裡的ATLAS 偵測器收集13TeV 能量強度的數據資料, 對於質子與質子之間的碰撞去做希格斯玻色子衰變成兩個W 玻色子對的分析。 針對Vector-Boson Fusion 的衰變型態做更深入的分析,其中一個背景分析就是 Z 玻色子衰變成一對 輕子。研究部分主要就是在Z 玻色子衰變成一對 輕子 的控制範圍之下做數據資料與Monti Carlo 產生器的結果分析。

並列摘要


We give an overview of the VBF analysis of the Higgs boson decaying into a pair of W bosons, with about 36fb^-1 of proton-proton collisions at center-of-mass energy of 13 TeV collected by the ATLAS detector at the LHC. One of the leading background processes is the Z boson decaying to a pair of leptons, and our study focuses on the results associated with data and Monte Carlo sample in the Z→ tautau control region of this analysis.

參考文獻


[1] LHC Higgs Cross Section Working Group, Handbook of LHC Higgs Cross Sections: 2. Differential Distributions CERN-2012-002
[2] ATLAS Collaboration, Observation and measurement of Higgs boson decays to WW* with the ATLAS detector Phys. Rev. D 92, 012006 (2015)
[3] ATLAS Collaboration, ATLAS simulation of boson plus jets processes in Run 2, 1427 ATL-PHYS-PUB-2017-006, 2017, url:http://cds.cern.ch/record/2261937.
[4] D. Rainwater and D. Zeppenfeld, Phys. Rev. D 60, 113004 (1999);
61, 099901(2000).

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