Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2013
期号	5
关键词	ANNIHILATION PROGRAM DECAYS
通讯作者	Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要	A search for the standard model Higgs boson produced in association with a top-quark pair is presented using data samples corresponding to an integrated luminosity of 5.0 fb(-1) (5.1 fb-1) collected in pp collisions at the center-of-mass energy of 7 TeV (8 TeV). Events are considered where the top-quark pair decays to either one lepton+jets (t (t) over bar -> l nu q (q) over bar 'b (b) over bar) or dileptons (t (t) over bar -> l(+)nu l-nu b (b) over bar), being an electron or a muon. The search is optimized for the decay mode H -> b (b) over bar. The largest background to the t (t) over barH signal is top-quark pair production with additional jets. Artificial neural networks are used to discriminate between signal and background events. Combining the results from the 7 TeV and 8 TeV samples, the observed (expected) limit on the cross section for Higgs boson production in association with top-quark pairs for a Higgs boson mass of 125 GeV is 5.8 (5.2) times the standard model expectation.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000321375600062
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213562]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	CMS Collaboration. Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(5).
APA	CMS Collaboration.(2013).Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC.JOURNAL OF HIGH ENERGY PHYSICS(5).
MLA	CMS Collaboration."Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC".JOURNAL OF HIGH ENERGY PHYSICS .5(2013).