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Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method
CMS Collaboration
2015
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号75期号:6页码:251
文章类型Article
摘要A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5 fb(-1) collected by the CMS experiment at the LHC in pp collisions at a centre-of-mass energy of 8 TeV. In order to separate the signal from the larger t (t) over bar + jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier, mu, relative to the standard model prediction for a Higgs boson mass of 125 GeV. The observed (expected) exclusion limit at a 95% confidence level is mu < 4.2 (3.3), corresponding to a best fit value <(mu)over cap> = 1.2(-1.5)(+1.6).
学科领域Physics
DOI10.1140/epjc/s10052-015-3454-1
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000355937400002
引用统计
被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228434
专题粒子天体物理中心
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CMS Collaboration. Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method[J]. EUROPEAN PHYSICAL JOURNAL C,2015,75(6):251.
APA CMS Collaboration.(2015).Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method.EUROPEAN PHYSICAL JOURNAL C,75(6),251.
MLA CMS Collaboration."Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method".EUROPEAN PHYSICAL JOURNAL C 75.6(2015):251.
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