Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states

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	Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2014
期号	1
关键词	STANDARD MODEL HADRON COLLIDERS ROOT-S=7 TEV ELECTROWEAK CORRECTIONS PARTON DISTRIBUTIONS MASSLESS PARTICLES BROKEN SYMMETRIES QCD CORRECTIONS ATLAS DETECTOR PP COLLISIONS
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 decaying to a W-boson pair at the LHC is reported. The event sample corresponds to an integrated luminosity of 4.9 fb(-1) and 19.4 fb(-1) collected with the CMS detector in pp collisions at = 7 and 8 TeV, respectively. The Higgs boson candidates are selected in events with two or three charged leptons. An excess of events above background is observed, consistent with the expectation from the standard model Higgs boson with a mass of around 125 GeV. The probability to observe an excess equal or larger than the one seen, under the background-only hypothesis, corresponds to a significance of 4.3 standard deviations for m (H) = 125.6 GeV. The observed signal cross section times the branching fraction to WW for m (H) = 125.6 GeV is times the standard model expectation. The spin-parity J (P) = 0(+) hypothesis is favored against a narrow resonance with J (P) = 2(+) or J (P) = 0(-) that decays to a W-boson pair. This result provides strong evidence for a Higgs-like boson decaying to a W-boson pair.
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:000330792800001
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213655]
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. Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states[J]. JOURNAL OF HIGH ENERGY PHYSICS,2014(1).
APA	CMS Collaboration.(2014).Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states.JOURNAL OF HIGH ENERGY PHYSICS(1).
MLA	CMS Collaboration."Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states".JOURNAL OF HIGH ENERGY PHYSICS .1(2014).