Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure

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	Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2015
卷号	2015 期号:6 页码:80
关键词	Hadron-Hadron Scattering Beyond Standard Model Top physics
英文摘要	A search is performed for a vector-like heavy T quark that is produced in pairs and that decays to a top quark and a Higgs boson. The data analysed correspond to an integrated luminosity of 19.7 fb(-1) collected with the CMS detector in proton-proton collisions at root s = 8TeV. For T quarks with large mass values the top quarks and Higgs bosons can have significant Lorentz boosts, so that their individual decay products often overlap and merge. Methods are applied to resolve the substructure of such merged jets. Upper limits on the production cross section of a T quark with mass between 500 and 1000 GeV/c(2) are derived. If the T quark decays exclusively to tH, the observed (expected) lower limit on the mass of the T quark is 745 (773) GeV/c(2) at 95% confidence level. For the first time an algorithm is used for tagging boosted Higgs bosons that is based on a combination of jet substructure information and b tagging.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
WOS记录号	WOS:000356796700001
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228400]
专题	高能物理研究所_粒子天体物理中心
推荐引用方式 GB/T 7714	CMS Collaboration. Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(6):80.
APA	CMS Collaboration.(2015).Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure.JOURNAL OF HIGH ENERGY PHYSICS,2015(6),80.
MLA	CMS Collaboration."Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure".JOURNAL OF HIGH ENERGY PHYSICS 2015.6(2015):80.