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

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题名:	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
作者:	陳勁瑋;Chen, Ching-Wei
贡献者:	物理學系
关键词:	大強子對撞機;希格斯粒子;緊湊渺子偵測器;LHC;CMS;heavy resonance;graviton;radion;di-Higgs
日期:	2017-07-20
上传时间:	2017-10-27 15:41:03 (UTC+8)
出版者:	國立中央大學
摘要:	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 35.9??−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、?21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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