於尋找單希格斯粒子中研究噴流子結構可觀測量

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姓名

陳孔祥(Kong-Hsiang Chen) 查詢紙本館藏

畢業系所

物理學系

論文名稱

於尋找單希格斯粒子中研究噴流子結構可觀測量
(The Study of Jet Substructure Observables for the Search of Mono-Higgs)

相關論文

★ 7 TeV 和2.76 TeV 質子對撞下，光子散射截面積的測量	★ Search for Pair Production of t*-> t + photon : Estimation of Photon Purity and Study of the Top and W Mass Resolution
★ 以大型強子對撞機裡的緊湊渺子線圈偵測器尋找重夸克在半輕子頻道衰變成頂夸克和光子	★ Search for Z′→Zh→llbb in pp Collisions at √s =8 TeV Using the CMS Detector at the LHC
★ Search for heavy resonances decaying into a Z boson and a Higgs boson in the 2l2b final state in pp collisions at √s = 13 TeV	★ 從質子質子對撞在質量中心能量 13 兆電子伏特利用緊湊渺子偵測器尋找重粒子衰變到一對希格斯粒子於四個底夸克最終態
★ Study of the b-tagging Scale Factor using the tt ̅ Events from pp collisions at √s =13 TeV with the CMS Detector	★ 在大型強子對撞機的緊湊渺子線圈偵測器，使用13兆電子伏特的質子-質子對撞尋找會衰變到一對希格斯玻色子且最終狀態為四個底夸克的重共振態
★ 在緊湊渺子線的質心對撞能量為 13 兆電子伏特的數據裡, 用字母法輔以突起搜尋之方法來尋找類 Z 玻色子衰變為 Z 玻色子及希格斯粒子在衰變為輕子與底垮克	★ 在與希格斯玻色子有關聯的暗物質搜索中去測量深度雙底夸克標記校正因子的誤判率
★ The Study of the Di-Higgs Production via Vector Boson Fusion Channel for the Phase II CMS at √? =14 TeV	★ The analysis of the TASEH CD102 data
★ 找尋具有長生命週期新粒子的物理模型所預測的暗物質	★ Toward discovering the low-mass dark matter: Constraints on Searches of Low-mass Weakly Interacting Massive Particle (WIMP) with Earth Attenuation Effect incorporated && Exploring the physics of germanium internal amplification for low-energy detection

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摘要(中)

搜索暗物質與一個類標準模型的希格斯粒子同時生成的成果將會被呈現，其中希格斯玻色子衰變為一對底夸克。在來年計畫以CMS在質心能量13兆電子伏特的第二次質子質子對撞實驗中得到的完整數據來更新單希格斯粒子的結果，設計事件篩選的標準以區分信號與背景，此篇論文對噴流子結構變量N_2^1進行了三個部分的研究，首先我們研究了其對希格斯粒子的標記並與另一種噴流子結構變量τ_21比較性能，其次，在經過轉換後的噴流子結構變量N_2^DDT的篩選後，考慮數據與蒙地卡羅模擬之間差異的比例因子，最後，將數據導向的方法應用於量子色動力學事件裡，作為噴流子結構變量的進一步研究。

摘要(英)

A search for dark matter produced in association with a standard-model-like Higgs boson, where the Higgs boson decays into a pair of bottom quarks, is performed. In coming year, the plan is to update the mono-Higgs results by using the full Run II data from proton-proton collisions collected at CMS experiment at center-of-mass energy of 13 TeV. The selection criteria is devised to discriminate the signal from background. There are three parts of study for the jet substructure variable, N_2^1, in this thesis. First, We study the boosted Higgs boson tagging and compare the performance with another jet substructure variable, τ_21. Second, the scale factor for the difference between data and MC is considered after the selection of transformed jet substructure variable, N_2^DDT. Last, the data-driven method is applied for the further study of jet substructure variable with QCD samples.

關鍵字(中)

★ 暗物質
★ 希格斯粒子
★ 緊湊緲子線圈
★ 大強子對撞機
★ 噴流子結構
★ 數據驅動

關鍵字(英)

★ Dark matter
★ Higgs boson
★ Compact Muon Solenoid
★ Large Hadron Collider
★ Jet substructure
★ Data driven

論文目次

1 Introduction 1
1.1 Motivation ............................................ 1
1.2 The standard model .................................... 1
1.3 2HDM + a Model ........................................ 2
1.3.1 Parameters in the Model ............................. 3
2 CMS Detector in LHC 5
2.1 Tracker ............................................... 6
2.2 Electromagnetic Calorimeter ........................... 8
2.3 Hadron Calorimeter .................................... 8
2.4 Superconducting Magnet ................................ 9
2.5 Muon Detector ......................................... 10
2.6 Trigger ............................................... 11
3 Physic Object Reconstruction and Selection 13
3.1 Jet Reconstruction .................................... 13
3.1.1 The anti-kt ......................................... 13
3.1.2 Jet grooming ........................................ 15
3.1.3 Jet Substructure Variable ........................... 16
3.1.4 AK4 Jet and AK8 Jet ................................. 17
3.2 Missing Transverse Momentum ........................... 17
3.3 Identification of Leptons and Photons ................. 18
3.4 Event Selection ....................................... 18
4 Analysis 21
4.1 Dataset ............................................... 21
4.2 Comparing of τ_21 and N_2^1 .......................... 24
4.2.1 Mass Sculpting Phenomenon ........................... 25
4.2.2 The Performance of Jet Substructure Variable Cuts ... 26
4.3 Scale Factor of N_2^1 ................................. 30
4.4 Data-driven Method .................................... 32
4.4.1 Trigger Efficiency .................................. 32
4.4.2 Data-driven Transfer Factor ......................... 34
4.4.3 Closure Test ........................................ 37
4.4.4 Correlation Plot from Data-driven Method ............ 37
5 Conclusion and Outlook 43
Bibliography 45

參考文獻

[1] Cush. File:Standard Model of Elementary Particles Anti.svg. 2018. URL: https://commons.wikimedia.org/wiki/File:Standard_Model_of_Elementary_Particles_Anti.svg.
[2] Christopher G. Tully. Elementary particle physics in the nutshell. 2011.
[3] Tomohiro Abe et al. “LHC Dark Matter Working Group: Next-generation spin-0 dark matter models”. In: (2018). arXiv: 1810.09420 [hep-ex].
[4] G.C. Branco et al. “Theory and phenomenology of two-Higgs-doublet models”. In: Physics Reports 516.1 (2012). Theory and phenomenology of two-Higgs-doublet models, pp. 1–102. ISSN: 0370-1573. DOI: https://doi.org/10.1016/j.physrep.2012.02.002. URL: https://www.sciencedirect.com/science/article/pii/S0370157312000695.
[5] Detector| CMS Experiment. URL: https://cms.cern/detector.
[6] W. Adam et al. “The CMS Phase-1 pixel detector upgrade”. In: Journal of Instrumentation 16.02 (2021), P02027–P02027. DOI: 10.1088/1748-0221/16/02/p02027. URL: https://doi.org/10.1088/1748-0221/16/02/p02027.
[7] “The CMS experiment at the CERN LHC”. In: Journal of Instrumentation 3.08 (Aug. 2008), S08004–S08004. DOI: 10.1088/1748-0221/3/08/s08004. URL: https://doi.org/10.1088/1748-0221/3/08/s08004.
[8] Silicon Strips| CMS Experiment. URL: https://cms.cern/detector/identifying-tracks/silicon-strips.
[9] Energy of Hadrons(HCAL)| CMS Experiment. URL: https://cms.cern/detector/measuring-energy/energy-hadrons-hcal.
[10] Muon Drift Tubes| CMS Experiment. URL: https://cms.cern/index.php/detector/detecting-muons/muon-drift-tubes.
[11] Cathode Strip Chambers| CMS Experiment. URL: https://cms.cern/index.php/detector/detecting-muons/cathode-strip-chambers.
[12] Resistive Plate Chambers| CMS Experiment. URL: https://cms.cern/detector/detecting-muons/resistive-plate-chambers.
[13] “The CMS high level trigger”. In: The European Physical Journal C 46.3 (2006), 605–667. DOI: 10.1140/epjc/s2006-02495-8. URL: http://dx.doi.org/10.1140/epjc/s2006-02495-8.
[14] Matteo Cacciari, Gavin P Salam, and Gregory Soyez. “The anti-kt clustering algorithm”. In: Journal of High Energy Physics 2008.04(2008), pp. 063–063. DOI: 10.1088/1126-6708/2008/04/063. URL: https://doi.org/10.1088/1126-6708/2008/04/063.
[15] Ryan Atkin. “Review of jet reconstruction algorithms”. In: Journal of Physics: Conference Series 645 (2015), p. 012008. DOI: 10.1088/1742-6596/645/1/012008. URL: https://doi.org/10.1088/1742-6596/645/1/012008.
[16] Andrew J. Larkoski et al. “Soft drop”. en. In: Journal of High Energy Physics 2014.5 (2014). DOI: 10.1007/jhep05(2014)146. arXiv: 1402.2657v2. URL: http://dx.doi.org/10.1007/JHEP05(2014)146.
[17] Ian Moult, Lina Necib, and Jesse Thaler. “New angles on energy correlation functions”. en. In: Journal of High Energy Physics 2016.12 (2016). DOI: 10.1007/jhep12(2016)153. arXiv: 1609.07483v2. URL: http://dx.doi.org/10.1007/JHEP12(2016)153.
[18] Andrew J. Larkoski, Gavin P. Salam, and Jesse Thaler. “Energy correlation functions for jet substructure”. en. In: Journal of High Energy Physics 2013.6 (2013). DOI: 10.1007/jhep06(2013)108. arXiv: 1305.0007v3. URL: http://dx.doi.org/10.1007/JHEP06(2013)108.
[19] Daniele Bertolini et al. “Pileup per particle identification”. en. In: Journal of High Energy Physics 2014.10 (2014). DOI: 10.1007/jhep10(2014)059. URL: http://dx.doi.org/10.1007/JHEP10(2014)059.
[20] James Dolen et al. “Thinking outside the ROCs: Designing decorrelated taggers (DDT) for jet substructure”. In: JHEP 05 (2016), p. 156. DOI: 10.1007/JHEP05(2016)156. arXiv: 1603.00027 [hep-ex].
[21] CMS Collaboration. “Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at √s = 13 TeV”. In: JHEP 12 (2020), p. 085. DOI: 10.1007/JHEP12(2020)085. arXiv: 2006.13251v2 [hep-ex].
[22] combine tool home page. URL: https://cms-analysis.github.io/HiggsAnalysis-CombinedLimit/.

指導教授

余欣珊(Shin-Shan Eiko Yu)

審核日期

2022-8-31

推文