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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳凱風(Kai-Feng Chen) | |
dc.contributor.author | Po-Hsun Chen | en |
dc.contributor.author | 陳柏勳 | zh_TW |
dc.date.accessioned | 2021-06-17T06:29:27Z | - |
dc.date.available | 2020-11-13 | |
dc.date.copyright | 2020-11-13 | |
dc.date.issued | 2020 | |
dc.date.submitted | 2020-09-18 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/72216 | - |
dc.description.abstract | 本文試圖以 2012 年由 CMS 偵測器採取的 19.98 fb−1 質心能量 8 兆電子伏特質子對撞資料,於 B± → K∗(892)±μ+μ− 衰變途徑進行角分佈量測。此衰變的角分佈可由渺子前後不對稱 (AFB) 及 K∗(892)± 介子縱向極化 (FL) 描述,兩者均為渺子對不變質量平方 (m2μμ) 的函數。在目標量測範圍 1 < m2μμ < 19(十億電子伏特平方) 內,量得 88.8 ± 13.0 個訊號事件,給出渺子不對稱性0.19 +0.11~−0.08(stat.) ± 0.11(syst.)、K∗(892)± 介子縱向極化為 0.71 +0.11~−0.08(stat.) ± 0.07(syst.)、K∗(892)±。在量測全域及子區間內的角分佈參數,其誤差範圍均包含粒子物理標準模型的理論預測結果。 | zh_TW |
dc.description.abstract | Angular distribution of B+ → K∗+μ+μ− decay is studied using the 19.98fb−1 proton–proton collision data at a center–of–mass energy of 8TeV collected with the CMS detector in 2012. The muon forward–backward asymmetry, AFB, and the K∗+(892)(→ KSπ+) longitudinal polarization, FL, are measured as a function of dimuon invariant mass squared(m2μμ) in the domain of 1 < m2μμ < 19. From 88.8 ± 13.0 signal events, the measured AFB is 0.19 +0.11~-0.08(stat.) ±0.11(syst.) and measured FL is 0.71 +0.11~−0.08(stat.) ±0.07(syst.). Either the measured values in the whole domain agree or −0.08 that in a subdomain agrees with the standard model predictions within uncertainty. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T06:29:27Z (GMT). No. of bitstreams: 1 U0001-1709202015061400.pdf: 21994858 bytes, checksum: c85d8e3f347d31587c11406d4e3b6f07 (MD5) Previous issue date: 2020 | en |
dc.description.tableofcontents | I Introduction 1 II Experimental Apparatus 5 II.1 The Large Hadron Collider 5 II.2 The Compact Muon Solenoid detector 9 III Physical object reconstruction 18 III.1 Track 18 III.2 Vertex 20 III.3 Muon 21 IV Analysis Strategy, Data, and Simulation 22 IV.1 Background source in B+ -> B*+mu+mu- 22 IV.2 Data collection in Compact Muon Solenoid(CMS) 23 IV.3 Simulation samples 24 IV.4 Overview of parameter estimation 26 V Event reconstruction and Event Selection 30 V.1 Event reconstruction 30 V.2 Resonance Veto 32 V.3 Optimization 33 V.4 Data-Simulation discrepancy studies 38 VI Fit Procedure 41 VI.1 Determination of Signal shape and efficiency 43 VI.2 Contribution from Peaking background 53 VI.3 Description to Combinatorial background 56 VII Systematic uncertainties 60 VII.1 Limited statistics of simulation samples 60 VII.2 Simulation mismodeling 60 VII.3 Efficiency Shape 61 VII.4 Combinatorial background mismodeling 61 VII.5 S-P wave Interference 62 VII.6 Definition of fit regions 62 VIII Statistical uncertainties 63 IX Results from Data 67 IX.1 Uncertainties 71 IX.2 Post-fit validations 74 X Conclusion and Prospects 76 A X-ray qualification in CMS Phase-1 Pixel upgrade 78 A.1 Overview to the sensor module 80 A.2 X-ray Qualification 81 A.3 X-ray high rate test 84 B Higgs to WW analysis in CMS 90 B.1 Analusis strategy 92 B.2 Event category and Control Regions 95 B.3 Multivariate analysis 104 B.4 Results 112 Glossary 114 Reference 117 | |
dc.language.iso | en | |
dc.title | B± 介子衰變到 K∗(892)±μ+μ− 的角分佈分析 — 使用 2012 年 CMS 質心能量 8 TeV 質子對撞資料 | zh_TW |
dc.title | Angular analysis for B± → K∗(892)±μ+μ− at √s=8 TeV in CMS | en |
dc.type | Thesis | |
dc.date.schoolyear | 109-1 | |
dc.description.degree | 博士 | |
dc.contributor.author-orcid | 0000-0002-0468-8805 | |
dc.contributor.oralexamcommittee | 郭家銘(Chia Ming Kuo),余欣珊(Shin-Shan Yu),蔣正偉(Cheng-Wei Chiang),呂榮祥(Rong-Shyang Lu),王名儒(Min-Zu Wang) | |
dc.subject.keyword | B物理,變味中性流,角分析,緊湊渺子線圈,質子-質子對撞,8兆電子伏特,B介子, | zh_TW |
dc.subject.keyword | B physics,Flavor changing neutral current,Angular analysis,CMS,pp collision,8 TeV,B meson, | en |
dc.relation.page | 120 | |
dc.identifier.doi | 10.6342/NTU202004216 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2020-09-18 | |
dc.contributor.author-college | 理學院 | zh_TW |
dc.contributor.author-dept | 物理學研究所 | zh_TW |
顯示於系所單位: | 物理學系 |
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