Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs

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	Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
	CMS Collaboration
刊名	PHYSICS LETTERS B
	2014
卷号	736 页码:64-85
关键词	PARTON DISTRIBUTIONS ATLAS DETECTOR FINAL-STATES LHC
通讯作者	Khachatryan, V (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要	Constraints are presented on the total width of the recently discovered Higgs boson, Gamma(H), using its relative on-shell and off-shell production and decay rates to a pair of Z bosons, where one Z boson decays to an electron or muon pair, and the other to an electron, muon, or neutrino pair. The analysis is based on the data collected by the CMS experiment at the LHC in 2011 and 2012, corresponding to integrated luminosities of 5.1 fb(-1) at a center-of-mass energy root s = 7 TeV and 19.7 fb(-1) at root s = 8 TeV. A simultaneous maximum likelihood fit to the measured kinematic distributions near the resonance peak and above the Z-boson pair production threshold leads to an upper limit on the Higgs boson width of Gamma(H) < 22 MeV at a 95% confidence level, which is 5.4 times the expected value in the standard model at the measured mass of m(H) = 125.6 GeV. (C) 2014 The Authors. Published by Elsevier B.V.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000341487800009
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213772]
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. Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs[J]. PHYSICS LETTERS B,2014,736:64-85.
APA	CMS Collaboration.(2014).Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs.PHYSICS LETTERS B,736,64-85.
MLA	CMS Collaboration."Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs".PHYSICS LETTERS B 736(2014):64-85.