Search for a Higgs boson decaying into a Z and a photon in pp collisions at root s=7 and 8 TeV

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	Search for a Higgs boson decaying into a Z and a photon in pp collisions at root s=7 and 8 TeV
	CMS Collaboration
刊名	PHYSICS LETTERS B
	2013
卷号	726 期号:4--5 页码:587-609
关键词	PARTON DISTRIBUTIONS ATLAS DETECTOR LHC PARTICLE COUPLINGS CMS
通讯作者	Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要	A search for a Higgs boson decaying into a Z boson and a photon is described. The analysis is performed using proton-proton collision datasets recorded by the CMS detector at the LHC. Events were collected at center-of-mass energies of 7 TeV and 8 TeV, corresponding to integrated luminosities of 5.0 fb(-1) and 19.6 fb(-1), respectively. The selected events are required to have opposite-sign electron or muon pairs. No excess above standard model predictions has been found in the 120-160 GeV mass range and the first limits on the Higgs boson production cross section times the H -> Z gamma branching fraction at the LHC have been derived. The observed at 95% confidence level limits are between about 4 and 25 times the standard model cross section times the branching fraction. For a standard model Higgs boson mass of 125 GeV the expected limit at the 95% confidence level is 10 and the observed limit is 9.5. Models predicting the Higgs boson production cross section times the H -> Z gamma branching fraction to be larger than one order of magnitude of the standard model prediction are excluded for most of the 125-157 GeV mass range. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000327907000005
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213629]
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 a Higgs boson decaying into a Z and a photon in pp collisions at root s=7 and 8 TeV[J]. PHYSICS LETTERS B,2013,726(4--5):587-609.
APA	CMS Collaboration.(2013).Search for a Higgs boson decaying into a Z and a photon in pp collisions at root s=7 and 8 TeV.PHYSICS LETTERS B,726(4--5),587-609.
MLA	CMS Collaboration."Search for a Higgs boson decaying into a Z and a photon in pp collisions at root s=7 and 8 TeV".PHYSICS LETTERS B 726.4--5(2013):587-609.