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| 研究生： |
陳勁瑋 Ching-Wei Chen |
|---|---|
| 論文名稱： |
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 Search for Heavy Resonances Decaying into a Pair of Higgs Bosons in the Four b quark Final State from pp Collisions at √s =13 TeV with the CMS Detector |
| 指導教授： |
余欣珊
Shin-Shan Eiko Yu |
| 口試委員: | |
| 學位類別： |
碩士 Master |
| 系所名稱： |
理學院 - 物理學系 Department of Physics |
| 論文出版年： | 2017 |
| 畢業學年度： | 105 |
| 語文別： | 英文 |
| 論文頁數： | 85 |
| 中文關鍵詞： | 大強子對撞機 、希格斯粒子 、緊湊 渺子偵測器 |
| 外文關鍵詞： | heavy resonance, graviton, di-Higgs |
| 相關次數： | 點閱：22 下載：0 |
| 分享至: |
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論文將呈現尋找重粒子衰變到一對希格斯粒子於四個底夸克最終
態。分析基於大強子對撞機在質量中心能量 13 兆電子伏特利用緊湊
渺子偵測器在 2016 收集的數據，總亮度為 35.9𝑓𝑏−1。希格斯粒子是
由正反底夸克對重建而成。希格斯噴流將由其質量、𝜏21與底夸克標
記選定。95% 信心水準利用 CLs 計算生產截面乘以衰變分支上限
介於重粒子的質量從 1.2 兆電子伏特到 3 兆電子伏特低於 10 fb.
A search for heavy resonances decaying to a pair of Higgs bosons in the four b
quark final state is presented. The analysis is based on the data collected in 2016
with the CMS detector at LHC at center-of-mass energy √
s = 13 TeV, corresponding
to integrated luminosity of 35.9 f b−1
. The Higgs bosons are reconstructed
from high momentum b
¯b quark pairs. The mass variable, τ21 discriminator, and
double-b tagger are used for Higgs tagging. The signal regions are separated by
double-b tagger into two categories. A 95% upper limit on the production cross
section of σX × B(X → HH → b
¯bb¯b) is obtained from the combination of two
categories with a limit below 10 fb for mX from 1200 to 3000 GeV
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