| DC 欄位 |
值 |
語言 |
| DC.contributor | 物理學系 | zh_TW |
| DC.creator | 李明晏 | zh_TW |
| DC.creator | Ming-Yan Lee | en_US |
| dc.date.accessioned | 2020-7-29T07:39:07Z | |
| dc.date.available | 2020-7-29T07:39:07Z | |
| dc.date.issued | 2020 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=107222011 | |
| dc.contributor.department | 物理學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 本論文研究希格斯粒子衰變至Z玻色子及光子之衰變頻道，其中Z玻色子 衰變至雙輕子，雙輕子在此為電子對與渺子對。本分析使用數據為大型強子對 撞機之質子-質子對撞於中心質量13兆電子伏特收集於緊湊渺子線圈偵測器，對 應光亮度為137fb-1。本分析使用動力學重整(kinematic refit)、終態光子復原 (final state radition photon recovery)及多變量分析 (MultiVariate Analysis)改善 分析靈敏度，這些方法相較於以篩選條件為主的分析改善了24%的靈敏度。預 測觀測上限在95%信心水準下，可得到1.7倍標準模型觀測值對應於顯著水準1.4 個標準差。 | zh_TW |
| dc.description.abstract | This thesis describes the Higgs decays to dilepton plus one photon with dilepton from the Z pole. This analysis is performed using a dataset recorded by the CMS experiment at the LHC from proton-proton collisions at a center of mass energy of 13TeV corresponding to an integrated luminosity of 137 fb−1. This analysis inte- grated the kinematic refit, final state photon radiation recovery ,and multivariate analysis(MVA) methods to boost the sensitivity. These techniques bring a 24% improvement compare to the cutbased analysis. Limits are set on the cross-section of a standard model Higgs boson for 125GeV at 95% confidence level is about 1.7 times the standard model prediction for the expected results with the p-value corresponding 1.4σ. | en_US |
| DC.subject | 大強子對撞機 | zh_TW |
| DC.subject | 緊湊渺子偵測器 | zh_TW |
| DC.subject | 希格斯粒子 | zh_TW |
| DC.subject | 稀有希格斯衰變 | zh_TW |
| DC.subject | LHC | en_US |
| DC.subject | CMS | en_US |
| DC.subject | Higgs | en_US |
| DC.subject | rare decay | en_US |
| DC.title | Search for Higgs boson decays to llγ with the CMS detector in proton-proton collisions at √s = 13 TeV with 137 fb-1 | en_US |
| dc.language.iso | en_US | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |